31918860

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:118

約数の個数: 240

約数和(自身を含む): 113430240

約数和(自身を除く): 81511380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 19, 20, 27, 30, 34, 36, 38, 45, 51, 54, 57, 60, 61, 68, 76, 81, 85, 90, 95, 102, 108, 114, 122, 135, 153, 162, 170, 171, 180, 183, 190, 204, 228, 244, 255, 270, 285, 305, 306, 323, 324, 340, 342, 366, 380, 405, 459, 510, 513, 540, 549, 570, 610, 612, 646, 684, 732, 765, 810, 855, 915, 918, 969, 1020, 1026, 1037, 1098, 1140, 1159, 1220, 1292, 1377, 1530, 1539, 1615, 1620, 1647, 1710, 1830, 1836, 1938, 2052, 2074, 2196, 2295, 2318, 2565, 2745, 2754, 2907, 3060, 3078, 3111, 3230, 3294, 3420, 3477, 3660, 3876, 4148, 4590, 4636, 4845, 4941, 5130, 5185, 5490, 5508, 5795, 5814, 6156, 6222, 6460, 6588, 6885, 6954, 7695, 8235, 8721, 9180, 9333, 9690, 9882, 10260, 10370, 10431, 10980, 11590, 11628, 12444, 13770, 13908, 14535, 15390, 15555, 16470, 17385, 17442, 18666, 19380, 19703, 19764, 20740, 20862, 23180, 24705, 26163, 27540, 27999, 29070, 30780, 31110, 31293, 32940, 34770, 34884, 37332, 39406, 41724, 43605, 46665, 49410, 52155, 52326, 55998, 58140, 59109, 62220, 62586, 69540, 78812, 83997, 87210, 93330, 93879, 98515, 98820, 104310, 104652, 111996, 118218, 125172, 130815, 139995, 156465, 167994, 174420, 177327, 186660, 187758, 197030, 208620, 236436, 261630, 279990, 295545, 312930, 335988, 354654, 375516, 394060, 419985, 469395, 523260, 531981, 559980, 591090, 625860, 709308, 839970, 886635, 938790, 1063962, 1182180, 1595943, 1679940, 1773270, 1877580, 2127924, 2659905, 3191886, 3546540, 5319810, 6383772, 7979715, 10639620, 15959430, 31918860]

約数ペア:

[(1, 31918860), (2, 15959430), (3, 10639620), (4, 7979715), (5, 6383772), (6, 5319810), (9, 3546540), (10, 3191886), (12, 2659905), (15, 2127924), (17, 1877580), (18, 1773270), (19, 1679940), (20, 1595943), (27, 1182180), (30, 1063962), (34, 938790), (36, 886635), (38, 839970), (45, 709308), (51, 625860), (54, 591090), (57, 559980), (60, 531981), (61, 523260), (68, 469395), (76, 419985), (81, 394060), (85, 375516), (90, 354654), (95, 335988), (102, 312930), (108, 295545), (114, 279990), (122, 261630), (135, 236436), (153, 208620), (162, 197030), (170, 187758), (171, 186660), (180, 177327), (183, 174420), (190, 167994), (204, 156465), (228, 139995), (244, 130815), (255, 125172), (270, 118218), (285, 111996), (305, 104652), (306, 104310), (323, 98820), (324, 98515), (340, 93879), (342, 93330), (366, 87210), (380, 83997), (405, 78812), (459, 69540), (510, 62586), (513, 62220), (540, 59109), (549, 58140), (570, 55998), (610, 52326), (612, 52155), (646, 49410), (684, 46665), (732, 43605), (765, 41724), (810, 39406), (855, 37332), (915, 34884), (918, 34770), (969, 32940), (1020, 31293), (1026, 31110), (1037, 30780), (1098, 29070), (1140, 27999), (1159, 27540), (1220, 26163), (1292, 24705), (1377, 23180), (1530, 20862), (1539, 20740), (1615, 19764), (1620, 19703), (1647, 19380), (1710, 18666), (1830, 17442), (1836, 17385), (1938, 16470), (2052, 15555), (2074, 15390), (2196, 14535), (2295, 13908), (2318, 13770), (2565, 12444), (2745, 11628), (2754, 11590), (2907, 10980), (3060, 10431), (3078, 10370), (3111, 10260), (3230, 9882), (3294, 9690), (3420, 9333), (3477, 9180), (3660, 8721), (3876, 8235), (4148, 7695), (4590, 6954), (4636, 6885), (4845, 6588), (4941, 6460), (5130, 6222), (5185, 6156), (5490, 5814), (5508, 5795)]