25245740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1091}}^1$

素因数の和:1202

約数の個数: 48

約数和(自身を含む): 57788640

約数和(自身を除く): 32542900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 89, 130, 178, 260, 356, 445, 890, 1091, 1157, 1780, 2182, 2314, 4364, 4628, 5455, 5785, 10910, 11570, 14183, 21820, 23140, 28366, 56732, 70915, 97099, 141830, 194198, 283660, 388396, 485495, 970990, 1262287, 1941980, 2524574, 5049148, 6311435, 12622870, 25245740]

約数ペア:

[(1, 25245740), (2, 12622870), (4, 6311435), (5, 5049148), (10, 2524574), (13, 1941980), (20, 1262287), (26, 970990), (52, 485495), (65, 388396), (89, 283660), (130, 194198), (178, 141830), (260, 97099), (356, 70915), (445, 56732), (890, 28366), (1091, 23140), (1157, 21820), (1780, 14183), (2182, 11570), (2314, 10910), (4364, 5785), (4628, 5455)]