81316404

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{727}}^1$

素因数の和:989

約数の個数: 72

約数和(自身を含む): 222593280

約数和(自身を除く): 141276876

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 239, 468, 478, 717, 727, 956, 1434, 1454, 2151, 2181, 2868, 2908, 3107, 4302, 4362, 6214, 6543, 8604, 8724, 9321, 9451, 12428, 13086, 18642, 18902, 26172, 27963, 28353, 37284, 37804, 55926, 56706, 85059, 111852, 113412, 170118, 173753, 340236, 347506, 521259, 695012, 1042518, 1563777, 2085036, 2258789, 3127554, 4517578, 6255108, 6776367, 9035156, 13552734, 20329101, 27105468, 40658202, 81316404]

約数ペア:

[(1, 81316404), (2, 40658202), (3, 27105468), (4, 20329101), (6, 13552734), (9, 9035156), (12, 6776367), (13, 6255108), (18, 4517578), (26, 3127554), (36, 2258789), (39, 2085036), (52, 1563777), (78, 1042518), (117, 695012), (156, 521259), (234, 347506), (239, 340236), (468, 173753), (478, 170118), (717, 113412), (727, 111852), (956, 85059), (1434, 56706), (1454, 55926), (2151, 37804), (2181, 37284), (2868, 28353), (2908, 27963), (3107, 26172), (4302, 18902), (4362, 18642), (6214, 13086), (6543, 12428), (8604, 9451), (8724, 9321)]