139857280

素因数分解:

$2^7\times 5^1\times {\mathrm{218527}}^1$

素因数の和:218546

約数の個数: 32

約数和(自身を含む): 334347840

約数和(自身を除く): 194490560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 218527, 437054, 874108, 1092635, 1748216, 2185270, 3496432, 4370540, 6992864, 8741080, 13985728, 17482160, 27971456, 34964320, 69928640, 139857280]

約数ペア:

[(1, 139857280), (2, 69928640), (4, 34964320), (5, 27971456), (8, 17482160), (10, 13985728), (16, 8741080), (20, 6992864), (32, 4370540), (40, 3496432), (64, 2185270), (80, 1748216), (128, 1092635), (160, 874108), (320, 437054), (640, 218527)]