20130120

素因数分解:

$2^3\times 3^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1$

素因数の和:154

約数の個数: 192

約数和(自身を含む): 72072000

約数和(自身を除く): 51941880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 81, 90, 95, 108, 109, 114, 120, 135, 152, 162, 171, 180, 190, 216, 218, 228, 243, 270, 285, 324, 327, 342, 360, 380, 405, 436, 456, 486, 513, 540, 545, 570, 648, 654, 684, 760, 810, 855, 872, 972, 981, 1026, 1080, 1090, 1140, 1215, 1308, 1368, 1539, 1620, 1635, 1710, 1944, 1962, 2052, 2071, 2180, 2280, 2430, 2565, 2616, 2943, 3078, 3240, 3270, 3420, 3924, 4104, 4142, 4360, 4617, 4860, 4905, 5130, 5886, 6156, 6213, 6540, 6840, 7695, 7848, 8284, 8829, 9234, 9720, 9810, 10260, 10355, 11772, 12312, 12426, 13080, 14715, 15390, 16568, 17658, 18468, 18639, 19620, 20520, 20710, 23085, 23544, 24852, 26487, 29430, 30780, 31065, 35316, 36936, 37278, 39240, 41420, 44145, 46170, 49704, 52974, 55917, 58860, 61560, 62130, 70632, 74556, 82840, 88290, 92340, 93195, 105948, 111834, 117720, 124260, 132435, 149112, 167751, 176580, 184680, 186390, 211896, 223668, 248520, 264870, 279585, 335502, 353160, 372780, 447336, 503253, 529740, 559170, 671004, 745560, 838755, 1006506, 1059480, 1118340, 1342008, 1677510, 2013012, 2236680, 2516265, 3355020, 4026024, 5032530, 6710040, 10065060, 20130120]

約数ペア:

[(1, 20130120), (2, 10065060), (3, 6710040), (4, 5032530), (5, 4026024), (6, 3355020), (8, 2516265), (9, 2236680), (10, 2013012), (12, 1677510), (15, 1342008), (18, 1118340), (19, 1059480), (20, 1006506), (24, 838755), (27, 745560), (30, 671004), (36, 559170), (38, 529740), (40, 503253), (45, 447336), (54, 372780), (57, 353160), (60, 335502), (72, 279585), (76, 264870), (81, 248520), (90, 223668), (95, 211896), (108, 186390), (109, 184680), (114, 176580), (120, 167751), (135, 149112), (152, 132435), (162, 124260), (171, 117720), (180, 111834), (190, 105948), (216, 93195), (218, 92340), (228, 88290), (243, 82840), (270, 74556), (285, 70632), (324, 62130), (327, 61560), (342, 58860), (360, 55917), (380, 52974), (405, 49704), (436, 46170), (456, 44145), (486, 41420), (513, 39240), (540, 37278), (545, 36936), (570, 35316), (648, 31065), (654, 30780), (684, 29430), (760, 26487), (810, 24852), (855, 23544), (872, 23085), (972, 20710), (981, 20520), (1026, 19620), (1080, 18639), (1090, 18468), (1140, 17658), (1215, 16568), (1308, 15390), (1368, 14715), (1539, 13080), (1620, 12426), (1635, 12312), (1710, 11772), (1944, 10355), (1962, 10260), (2052, 9810), (2071, 9720), (2180, 9234), (2280, 8829), (2430, 8284), (2565, 7848), (2616, 7695), (2943, 6840), (3078, 6540), (3240, 6213), (3270, 6156), (3420, 5886), (3924, 5130), (4104, 4905), (4142, 4860), (4360, 4617)]