64409620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{811}}^1$

素因数の和:869

約数の個数: 72

約数和(自身を含む): 155923488

約数和(自身を除く): 91513868

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 361, 380, 418, 722, 811, 836, 1045, 1444, 1622, 1805, 2090, 3244, 3610, 3971, 4055, 4180, 7220, 7942, 8110, 8921, 15409, 15884, 16220, 17842, 19855, 30818, 35684, 39710, 44605, 61636, 77045, 79420, 89210, 154090, 169499, 178420, 292771, 308180, 338998, 585542, 677996, 847495, 1171084, 1463855, 1694990, 2927710, 3220481, 3389980, 5855420, 6440962, 12881924, 16102405, 32204810, 64409620]

約数ペア:

[(1, 64409620), (2, 32204810), (4, 16102405), (5, 12881924), (10, 6440962), (11, 5855420), (19, 3389980), (20, 3220481), (22, 2927710), (38, 1694990), (44, 1463855), (55, 1171084), (76, 847495), (95, 677996), (110, 585542), (190, 338998), (209, 308180), (220, 292771), (361, 178420), (380, 169499), (418, 154090), (722, 89210), (811, 79420), (836, 77045), (1045, 61636), (1444, 44605), (1622, 39710), (1805, 35684), (2090, 30818), (3244, 19855), (3610, 17842), (3971, 16220), (4055, 15884), (4180, 15409), (7220, 8921), (7942, 8110)]