64456280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1091}}^1$

素因数の和:1320

約数の個数: 64

約数和(自身を含む): 166682880

約数和(自身を除く): 102226600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 211, 280, 422, 844, 1055, 1091, 1477, 1688, 2110, 2182, 2954, 4220, 4364, 5455, 5908, 7385, 7637, 8440, 8728, 10910, 11816, 14770, 15274, 21820, 29540, 30548, 38185, 43640, 59080, 61096, 76370, 152740, 230201, 305480, 460402, 920804, 1151005, 1611407, 1841608, 2302010, 3222814, 4604020, 6445628, 8057035, 9208040, 12891256, 16114070, 32228140, 64456280]

約数ペア:

[(1, 64456280), (2, 32228140), (4, 16114070), (5, 12891256), (7, 9208040), (8, 8057035), (10, 6445628), (14, 4604020), (20, 3222814), (28, 2302010), (35, 1841608), (40, 1611407), (56, 1151005), (70, 920804), (140, 460402), (211, 305480), (280, 230201), (422, 152740), (844, 76370), (1055, 61096), (1091, 59080), (1477, 43640), (1688, 38185), (2110, 30548), (2182, 29540), (2954, 21820), (4220, 15274), (4364, 14770), (5455, 11816), (5908, 10910), (7385, 8728), (7637, 8440)]