280647580

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{461}}^1\times {\mathrm{499}}^1$

素因数の和:1030

約数の個数: 48

約数和(自身を含む): 601524000

約数和(自身を除く): 320876420

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 461, 499, 610, 922, 998, 1220, 1844, 1996, 2305, 2495, 4610, 4990, 9220, 9980, 28121, 30439, 56242, 60878, 112484, 121756, 140605, 152195, 230039, 281210, 304390, 460078, 562420, 608780, 920156, 1150195, 2300390, 4600780, 14032379, 28064758, 56129516, 70161895, 140323790, 280647580]

約数ペア:

[(1, 280647580), (2, 140323790), (4, 70161895), (5, 56129516), (10, 28064758), (20, 14032379), (61, 4600780), (122, 2300390), (244, 1150195), (305, 920156), (461, 608780), (499, 562420), (610, 460078), (922, 304390), (998, 281210), (1220, 230039), (1844, 152195), (1996, 140605), (2305, 121756), (2495, 112484), (4610, 60878), (4990, 56242), (9220, 30439), (9980, 28121)]