18209960

素因数分解:

$2^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{1889}}^1$

素因数の和:2141

約数の個数: 32

約数和(自身を含む): 41164200

約数和(自身を除く): 22954240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 241, 482, 964, 1205, 1889, 1928, 2410, 3778, 4820, 7556, 9445, 9640, 15112, 18890, 37780, 75560, 455249, 910498, 1820996, 2276245, 3641992, 4552490, 9104980, 18209960]

約数ペア:

[(1, 18209960), (2, 9104980), (4, 4552490), (5, 3641992), (8, 2276245), (10, 1820996), (20, 910498), (40, 455249), (241, 75560), (482, 37780), (964, 18890), (1205, 15112), (1889, 9640), (1928, 9445), (2410, 7556), (3778, 4820)]