99400520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{57791}}^1$

素因数の和:57845

約数の個数: 32

約数和(自身を含む): 228856320

約数和(自身を除く): 129455800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 57791, 115582, 231164, 288955, 462328, 577910, 1155820, 2311640, 2485013, 4970026, 9940052, 12425065, 19880104, 24850130, 49700260, 99400520]

約数ペア:

[(1, 99400520), (2, 49700260), (4, 24850130), (5, 19880104), (8, 12425065), (10, 9940052), (20, 4970026), (40, 2485013), (43, 2311640), (86, 1155820), (172, 577910), (215, 462328), (344, 288955), (430, 231164), (860, 115582), (1720, 57791)]