81071460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{977}}^1$

素因数の和:1453

約数の個数: 72

約数和(自身を含む): 246702456

約数和(自身を除く): 165630996

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 461, 922, 977, 1383, 1844, 1954, 2305, 2766, 2931, 3908, 4149, 4610, 4885, 5532, 5862, 6915, 8298, 8793, 9220, 9770, 11724, 13830, 14655, 16596, 17586, 19540, 20745, 27660, 29310, 35172, 41490, 43965, 58620, 82980, 87930, 175860, 450397, 900794, 1351191, 1801588, 2251985, 2702382, 4053573, 4503970, 5404764, 6755955, 8107146, 9007940, 13511910, 16214292, 20267865, 27023820, 40535730, 81071460]

約数ペア:

[(1, 81071460), (2, 40535730), (3, 27023820), (4, 20267865), (5, 16214292), (6, 13511910), (9, 9007940), (10, 8107146), (12, 6755955), (15, 5404764), (18, 4503970), (20, 4053573), (30, 2702382), (36, 2251985), (45, 1801588), (60, 1351191), (90, 900794), (180, 450397), (461, 175860), (922, 87930), (977, 82980), (1383, 58620), (1844, 43965), (1954, 41490), (2305, 35172), (2766, 29310), (2931, 27660), (3908, 20745), (4149, 19540), (4610, 17586), (4885, 16596), (5532, 14655), (5862, 13830), (6915, 11724), (8298, 9770), (8793, 9220)]