1281802180

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{317}}^1\times {\mathrm{1117}}^1$

素因数の和:1624

約数の個数: 48

約数和(自身を含む): 2717625456

約数和(自身を除く): 1435823276

約数列:

[1, 2, 4, 5, 10, 20, 181, 317, 362, 634, 724, 905, 1117, 1268, 1585, 1810, 2234, 3170, 3620, 4468, 5585, 6340, 11170, 22340, 57377, 114754, 202177, 229508, 286885, 354089, 404354, 573770, 708178, 808708, 1010885, 1147540, 1416356, 1770445, 2021770, 3540890, 4043540, 7081780, 64090109, 128180218, 256360436, 320450545, 640901090, 1281802180]

約数ペア:

[(1, 1281802180), (2, 640901090), (4, 320450545), (5, 256360436), (10, 128180218), (20, 64090109), (181, 7081780), (317, 4043540), (362, 3540890), (634, 2021770), (724, 1770445), (905, 1416356), (1117, 1147540), (1268, 1010885), (1585, 808708), (1810, 708178), (2234, 573770), (3170, 404354), (3620, 354089), (4468, 286885), (5585, 229508), (6340, 202177), (11170, 114754), (22340, 57377)]