20158480

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8689}}^1$

素因数の和:8731

約数の個数: 40

約数和(自身を含む): 48490200

約数和(自身を除く): 28331720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 8689, 17378, 34756, 43445, 69512, 86890, 139024, 173780, 251981, 347560, 503962, 695120, 1007924, 1259905, 2015848, 2519810, 4031696, 5039620, 10079240, 20158480]

約数ペア:

[(1, 20158480), (2, 10079240), (4, 5039620), (5, 4031696), (8, 2519810), (10, 2015848), (16, 1259905), (20, 1007924), (29, 695120), (40, 503962), (58, 347560), (80, 251981), (116, 173780), (145, 139024), (232, 86890), (290, 69512), (464, 43445), (580, 34756), (1160, 17378), (2320, 8689)]