77786840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47431}}^1$

素因数の和:47483

約数の個数: 32

約数和(自身を含む): 179292960

約数和(自身を除く): 101506120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 47431, 94862, 189724, 237155, 379448, 474310, 948620, 1897240, 1944671, 3889342, 7778684, 9723355, 15557368, 19446710, 38893420, 77786840]

約数ペア:

[(1, 77786840), (2, 38893420), (4, 19446710), (5, 15557368), (8, 9723355), (10, 7778684), (20, 3889342), (40, 1944671), (41, 1897240), (82, 948620), (164, 474310), (205, 379448), (328, 237155), (410, 189724), (820, 94862), (1640, 47431)]