68455220

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{6971}}^1$

素因数の和:7471

約数の個数: 24

約数和(自身を含む): 144069408

約数和(自身を除く): 75614188

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 6971, 9820, 13942, 27884, 34855, 69710, 139420, 3422761, 6845522, 13691044, 17113805, 34227610, 68455220]

約数ペア:

[(1, 68455220), (2, 34227610), (4, 17113805), (5, 13691044), (10, 6845522), (20, 3422761), (491, 139420), (982, 69710), (1964, 34855), (2455, 27884), (4910, 13942), (6971, 9820)]