20653380

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:112

約数の個数: 240

約数和(自身を含む): 75620160

約数和(自身を除く): 54966780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 19, 20, 22, 27, 30, 33, 36, 38, 44, 45, 54, 55, 57, 60, 61, 66, 76, 81, 90, 95, 99, 108, 110, 114, 122, 132, 135, 162, 165, 171, 180, 183, 190, 198, 209, 220, 228, 244, 270, 285, 297, 305, 324, 330, 342, 366, 380, 396, 405, 418, 495, 513, 540, 549, 570, 594, 610, 627, 660, 671, 684, 732, 810, 836, 855, 891, 915, 990, 1026, 1045, 1098, 1140, 1159, 1188, 1220, 1254, 1342, 1485, 1539, 1620, 1647, 1710, 1782, 1830, 1881, 1980, 2013, 2052, 2090, 2196, 2318, 2508, 2565, 2684, 2745, 2970, 3078, 3135, 3294, 3355, 3420, 3477, 3564, 3660, 3762, 4026, 4180, 4455, 4636, 4941, 5130, 5490, 5643, 5795, 5940, 6039, 6156, 6270, 6588, 6710, 6954, 7524, 7695, 8052, 8235, 8910, 9405, 9882, 10065, 10260, 10431, 10980, 11286, 11590, 12078, 12540, 12749, 13420, 13908, 15390, 16470, 16929, 17385, 17820, 18117, 18810, 19764, 20130, 20862, 22572, 23180, 24156, 24705, 25498, 28215, 30195, 30780, 31293, 32940, 33858, 34770, 36234, 37620, 38247, 40260, 41724, 49410, 50996, 52155, 54351, 56430, 60390, 62586, 63745, 67716, 69540, 72468, 76494, 84645, 90585, 93879, 98820, 104310, 108702, 112860, 114741, 120780, 125172, 127490, 152988, 156465, 169290, 181170, 187758, 191235, 208620, 217404, 229482, 254980, 271755, 312930, 338580, 344223, 362340, 375516, 382470, 458964, 469395, 543510, 573705, 625860, 688446, 764940, 938790, 1032669, 1087020, 1147410, 1376892, 1721115, 1877580, 2065338, 2294820, 3442230, 4130676, 5163345, 6884460, 10326690, 20653380]

約数ペア:

[(1, 20653380), (2, 10326690), (3, 6884460), (4, 5163345), (5, 4130676), (6, 3442230), (9, 2294820), (10, 2065338), (11, 1877580), (12, 1721115), (15, 1376892), (18, 1147410), (19, 1087020), (20, 1032669), (22, 938790), (27, 764940), (30, 688446), (33, 625860), (36, 573705), (38, 543510), (44, 469395), (45, 458964), (54, 382470), (55, 375516), (57, 362340), (60, 344223), (61, 338580), (66, 312930), (76, 271755), (81, 254980), (90, 229482), (95, 217404), (99, 208620), (108, 191235), (110, 187758), (114, 181170), (122, 169290), (132, 156465), (135, 152988), (162, 127490), (165, 125172), (171, 120780), (180, 114741), (183, 112860), (190, 108702), (198, 104310), (209, 98820), (220, 93879), (228, 90585), (244, 84645), (270, 76494), (285, 72468), (297, 69540), (305, 67716), (324, 63745), (330, 62586), (342, 60390), (366, 56430), (380, 54351), (396, 52155), (405, 50996), (418, 49410), (495, 41724), (513, 40260), (540, 38247), (549, 37620), (570, 36234), (594, 34770), (610, 33858), (627, 32940), (660, 31293), (671, 30780), (684, 30195), (732, 28215), (810, 25498), (836, 24705), (855, 24156), (891, 23180), (915, 22572), (990, 20862), (1026, 20130), (1045, 19764), (1098, 18810), (1140, 18117), (1159, 17820), (1188, 17385), (1220, 16929), (1254, 16470), (1342, 15390), (1485, 13908), (1539, 13420), (1620, 12749), (1647, 12540), (1710, 12078), (1782, 11590), (1830, 11286), (1881, 10980), (1980, 10431), (2013, 10260), (2052, 10065), (2090, 9882), (2196, 9405), (2318, 8910), (2508, 8235), (2565, 8052), (2684, 7695), (2745, 7524), (2970, 6954), (3078, 6710), (3135, 6588), (3294, 6270), (3355, 6156), (3420, 6039), (3477, 5940), (3564, 5795), (3660, 5643), (3762, 5490), (4026, 5130), (4180, 4941), (4455, 4636)]