31421280

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{541}}^1$

素因数の和:581

約数の個数: 144

約数和(自身を含む): 108994032

約数和(自身を除く): 77572752

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 66, 80, 88, 96, 110, 120, 121, 132, 160, 165, 176, 220, 240, 242, 264, 330, 352, 363, 440, 480, 484, 528, 541, 605, 660, 726, 880, 968, 1056, 1082, 1210, 1320, 1452, 1623, 1760, 1815, 1936, 2164, 2420, 2640, 2705, 2904, 3246, 3630, 3872, 4328, 4840, 5280, 5410, 5808, 5951, 6492, 7260, 8115, 8656, 9680, 10820, 11616, 11902, 12984, 14520, 16230, 17312, 17853, 19360, 21640, 23804, 25968, 29040, 29755, 32460, 35706, 43280, 47608, 51936, 58080, 59510, 64920, 65461, 71412, 86560, 89265, 95216, 119020, 129840, 130922, 142824, 178530, 190432, 196383, 238040, 259680, 261844, 285648, 327305, 357060, 392766, 476080, 523688, 571296, 654610, 714120, 785532, 952160, 981915, 1047376, 1309220, 1428240, 1571064, 1963830, 2094752, 2618440, 2856480, 3142128, 3927660, 5236880, 6284256, 7855320, 10473760, 15710640, 31421280]

約数ペア:

[(1, 31421280), (2, 15710640), (3, 10473760), (4, 7855320), (5, 6284256), (6, 5236880), (8, 3927660), (10, 3142128), (11, 2856480), (12, 2618440), (15, 2094752), (16, 1963830), (20, 1571064), (22, 1428240), (24, 1309220), (30, 1047376), (32, 981915), (33, 952160), (40, 785532), (44, 714120), (48, 654610), (55, 571296), (60, 523688), (66, 476080), (80, 392766), (88, 357060), (96, 327305), (110, 285648), (120, 261844), (121, 259680), (132, 238040), (160, 196383), (165, 190432), (176, 178530), (220, 142824), (240, 130922), (242, 129840), (264, 119020), (330, 95216), (352, 89265), (363, 86560), (440, 71412), (480, 65461), (484, 64920), (528, 59510), (541, 58080), (605, 51936), (660, 47608), (726, 43280), (880, 35706), (968, 32460), (1056, 29755), (1082, 29040), (1210, 25968), (1320, 23804), (1452, 21640), (1623, 19360), (1760, 17853), (1815, 17312), (1936, 16230), (2164, 14520), (2420, 12984), (2640, 11902), (2705, 11616), (2904, 10820), (3246, 9680), (3630, 8656), (3872, 8115), (4328, 7260), (4840, 6492), (5280, 5951), (5410, 5808)]