21512712

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{191}}^1$

素因数の和:251

約数の個数: 96

約数和(自身を含む): 61447680

約数和(自身を除く): 39934968

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 19, 24, 26, 38, 39, 52, 57, 76, 78, 104, 114, 152, 156, 191, 228, 247, 312, 361, 382, 456, 494, 573, 722, 741, 764, 988, 1083, 1146, 1444, 1482, 1528, 1976, 2166, 2292, 2483, 2888, 2964, 3629, 4332, 4584, 4693, 4966, 5928, 7258, 7449, 8664, 9386, 9932, 10887, 14079, 14516, 14898, 18772, 19864, 21774, 28158, 29032, 29796, 37544, 43548, 47177, 56316, 59592, 68951, 87096, 94354, 112632, 137902, 141531, 188708, 206853, 275804, 283062, 377416, 413706, 551608, 566124, 827412, 896363, 1132248, 1654824, 1792726, 2689089, 3585452, 5378178, 7170904, 10756356, 21512712]

約数ペア:

[(1, 21512712), (2, 10756356), (3, 7170904), (4, 5378178), (6, 3585452), (8, 2689089), (12, 1792726), (13, 1654824), (19, 1132248), (24, 896363), (26, 827412), (38, 566124), (39, 551608), (52, 413706), (57, 377416), (76, 283062), (78, 275804), (104, 206853), (114, 188708), (152, 141531), (156, 137902), (191, 112632), (228, 94354), (247, 87096), (312, 68951), (361, 59592), (382, 56316), (456, 47177), (494, 43548), (573, 37544), (722, 29796), (741, 29032), (764, 28158), (988, 21774), (1083, 19864), (1146, 18772), (1444, 14898), (1482, 14516), (1528, 14079), (1976, 10887), (2166, 9932), (2292, 9386), (2483, 8664), (2888, 7449), (2964, 7258), (3629, 5928), (4332, 4966), (4584, 4693)]