20538960

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{227}}^1$

素因数の和:285

約数の個数: 160

約数和(自身を含む): 71245440

約数和(自身を除く): 50706480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 29, 30, 39, 40, 48, 52, 58, 60, 65, 78, 80, 87, 104, 116, 120, 130, 145, 156, 174, 195, 208, 227, 232, 240, 260, 290, 312, 348, 377, 390, 435, 454, 464, 520, 580, 624, 681, 696, 754, 780, 870, 908, 1040, 1131, 1135, 1160, 1362, 1392, 1508, 1560, 1740, 1816, 1885, 2262, 2270, 2320, 2724, 2951, 3016, 3120, 3405, 3480, 3632, 3770, 4524, 4540, 5448, 5655, 5902, 6032, 6583, 6810, 6960, 7540, 8853, 9048, 9080, 10896, 11310, 11804, 13166, 13620, 14755, 15080, 17706, 18096, 18160, 19749, 22620, 23608, 26332, 27240, 29510, 30160, 32915, 35412, 39498, 44265, 45240, 47216, 52664, 54480, 59020, 65830, 70824, 78996, 85579, 88530, 90480, 98745, 105328, 118040, 131660, 141648, 157992, 171158, 177060, 197490, 236080, 256737, 263320, 315984, 342316, 354120, 394980, 427895, 513474, 526640, 684632, 708240, 789960, 855790, 1026948, 1283685, 1369264, 1579920, 1711580, 2053896, 2567370, 3423160, 4107792, 5134740, 6846320, 10269480, 20538960]

約数ペア:

[(1, 20538960), (2, 10269480), (3, 6846320), (4, 5134740), (5, 4107792), (6, 3423160), (8, 2567370), (10, 2053896), (12, 1711580), (13, 1579920), (15, 1369264), (16, 1283685), (20, 1026948), (24, 855790), (26, 789960), (29, 708240), (30, 684632), (39, 526640), (40, 513474), (48, 427895), (52, 394980), (58, 354120), (60, 342316), (65, 315984), (78, 263320), (80, 256737), (87, 236080), (104, 197490), (116, 177060), (120, 171158), (130, 157992), (145, 141648), (156, 131660), (174, 118040), (195, 105328), (208, 98745), (227, 90480), (232, 88530), (240, 85579), (260, 78996), (290, 70824), (312, 65830), (348, 59020), (377, 54480), (390, 52664), (435, 47216), (454, 45240), (464, 44265), (520, 39498), (580, 35412), (624, 32915), (681, 30160), (696, 29510), (754, 27240), (780, 26332), (870, 23608), (908, 22620), (1040, 19749), (1131, 18160), (1135, 18096), (1160, 17706), (1362, 15080), (1392, 14755), (1508, 13620), (1560, 13166), (1740, 11804), (1816, 11310), (1885, 10896), (2262, 9080), (2270, 9048), (2320, 8853), (2724, 7540), (2951, 6960), (3016, 6810), (3120, 6583), (3405, 6032), (3480, 5902), (3632, 5655), (3770, 5448), (4524, 4540)]