90401720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{277}}^1$

素因数の和:528

約数の個数: 64

約数和(自身を含む): 210168000

約数和(自身を除く): 119766280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 199, 205, 277, 328, 398, 410, 554, 796, 820, 995, 1108, 1385, 1592, 1640, 1990, 2216, 2770, 3980, 5540, 7960, 8159, 11080, 11357, 16318, 22714, 32636, 40795, 45428, 55123, 56785, 65272, 81590, 90856, 110246, 113570, 163180, 220492, 227140, 275615, 326360, 440984, 454280, 551230, 1102460, 2204920, 2260043, 4520086, 9040172, 11300215, 18080344, 22600430, 45200860, 90401720]

約数ペア:

[(1, 90401720), (2, 45200860), (4, 22600430), (5, 18080344), (8, 11300215), (10, 9040172), (20, 4520086), (40, 2260043), (41, 2204920), (82, 1102460), (164, 551230), (199, 454280), (205, 440984), (277, 326360), (328, 275615), (398, 227140), (410, 220492), (554, 163180), (796, 113570), (820, 110246), (995, 90856), (1108, 81590), (1385, 65272), (1592, 56785), (1640, 55123), (1990, 45428), (2216, 40795), (2770, 32636), (3980, 22714), (5540, 16318), (7960, 11357), (8159, 11080)]