1639004840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{161957}}^1$

素因数の和:162002

約数の個数: 64

約数和(自身を含む): 4197951360

約数和(自身を除く): 2558946520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 92, 110, 115, 184, 220, 230, 253, 440, 460, 506, 920, 1012, 1265, 2024, 2530, 5060, 10120, 161957, 323914, 647828, 809785, 1295656, 1619570, 1781527, 3239140, 3563054, 3725011, 6478280, 7126108, 7450022, 8907635, 14252216, 14900044, 17815270, 18625055, 29800088, 35630540, 37250110, 40975121, 71261080, 74500220, 81950242, 149000440, 163900484, 204875605, 327800968, 409751210, 819502420, 1639004840]

約数ペア:

[(1, 1639004840), (2, 819502420), (4, 409751210), (5, 327800968), (8, 204875605), (10, 163900484), (11, 149000440), (20, 81950242), (22, 74500220), (23, 71261080), (40, 40975121), (44, 37250110), (46, 35630540), (55, 29800088), (88, 18625055), (92, 17815270), (110, 14900044), (115, 14252216), (184, 8907635), (220, 7450022), (230, 7126108), (253, 6478280), (440, 3725011), (460, 3563054), (506, 3239140), (920, 1781527), (1012, 1619570), (1265, 1295656), (2024, 809785), (2530, 647828), (5060, 323914), (10120, 161957)]