804560980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{6521}}^1$

素因数の和:6760

約数の個数: 48

約数和(自身を含む): 1753113600

約数和(自身を除く): 948552620

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 199, 310, 398, 620, 796, 995, 1990, 3980, 6169, 6521, 12338, 13042, 24676, 26084, 30845, 32605, 61690, 65210, 123380, 130420, 202151, 404302, 808604, 1010755, 1297679, 2021510, 2595358, 4043020, 5190716, 6488395, 12976790, 25953580, 40228049, 80456098, 160912196, 201140245, 402280490, 804560980]

約数ペア:

[(1, 804560980), (2, 402280490), (4, 201140245), (5, 160912196), (10, 80456098), (20, 40228049), (31, 25953580), (62, 12976790), (124, 6488395), (155, 5190716), (199, 4043020), (310, 2595358), (398, 2021510), (620, 1297679), (796, 1010755), (995, 808604), (1990, 404302), (3980, 202151), (6169, 130420), (6521, 123380), (12338, 65210), (13042, 61690), (24676, 32605), (26084, 30845)]