331527640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{6521}}^1$

素因数の和:6604

約数の個数: 64

約数和(自身を含む): 788901120

約数和(自身を除く): 457373480

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 155, 164, 205, 248, 310, 328, 410, 620, 820, 1240, 1271, 1640, 2542, 5084, 6355, 6521, 10168, 12710, 13042, 25420, 26084, 32605, 50840, 52168, 65210, 130420, 202151, 260840, 267361, 404302, 534722, 808604, 1010755, 1069444, 1336805, 1617208, 2021510, 2138888, 2673610, 4043020, 5347220, 8086040, 8288191, 10694440, 16576382, 33152764, 41440955, 66305528, 82881910, 165763820, 331527640]

約数ペア:

[(1, 331527640), (2, 165763820), (4, 82881910), (5, 66305528), (8, 41440955), (10, 33152764), (20, 16576382), (31, 10694440), (40, 8288191), (41, 8086040), (62, 5347220), (82, 4043020), (124, 2673610), (155, 2138888), (164, 2021510), (205, 1617208), (248, 1336805), (310, 1069444), (328, 1010755), (410, 808604), (620, 534722), (820, 404302), (1240, 267361), (1271, 260840), (1640, 202151), (2542, 130420), (5084, 65210), (6355, 52168), (6521, 50840), (10168, 32605), (12710, 26084), (13042, 25420)]