71312840

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{3631}}^1$

素因数の和:4133

約数の個数: 32

約数和(自身を含む): 160824960

約数和(自身を除く): 89512120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3631, 3928, 4910, 7262, 9820, 14524, 18155, 19640, 29048, 36310, 72620, 145240, 1782821, 3565642, 7131284, 8914105, 14262568, 17828210, 35656420, 71312840]

約数ペア:

[(1, 71312840), (2, 35656420), (4, 17828210), (5, 14262568), (8, 8914105), (10, 7131284), (20, 3565642), (40, 1782821), (491, 145240), (982, 72620), (1964, 36310), (2455, 29048), (3631, 19640), (3928, 18155), (4910, 14524), (7262, 9820)]