18745597720

素因数分解:

$2^3\times 5^1\times {\mathrm{379}}^1\times {\mathrm{1236517}}^1$

素因数の和:1236907

約数の個数: 32

約数和(自身を含む): 42288915600

約数和(自身を除く): 23543317880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 379, 758, 1516, 1895, 3032, 3790, 7580, 15160, 1236517, 2473034, 4946068, 6182585, 9892136, 12365170, 24730340, 49460680, 468639943, 937279886, 1874559772, 2343199715, 3749119544, 4686399430, 9372798860, 18745597720]

約数ペア:

[(1, 18745597720), (2, 9372798860), (4, 4686399430), (5, 3749119544), (8, 2343199715), (10, 1874559772), (20, 937279886), (40, 468639943), (379, 49460680), (758, 24730340), (1516, 12365170), (1895, 9892136), (3032, 6182585), (3790, 4946068), (7580, 2473034), (15160, 1236517)]