81275580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2269}}^1$

素因数の和:2483

約数の個数: 72

約数和(自身を含む): 247884000

約数和(自身を除く): 166608420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 199, 398, 597, 796, 995, 1194, 1791, 1990, 2269, 2388, 2985, 3582, 3980, 4538, 5970, 6807, 7164, 8955, 9076, 11345, 11940, 13614, 17910, 20421, 22690, 27228, 34035, 35820, 40842, 45380, 68070, 81684, 102105, 136140, 204210, 408420, 451531, 903062, 1354593, 1806124, 2257655, 2709186, 4063779, 4515310, 5418372, 6772965, 8127558, 9030620, 13545930, 16255116, 20318895, 27091860, 40637790, 81275580]

約数ペア:

[(1, 81275580), (2, 40637790), (3, 27091860), (4, 20318895), (5, 16255116), (6, 13545930), (9, 9030620), (10, 8127558), (12, 6772965), (15, 5418372), (18, 4515310), (20, 4063779), (30, 2709186), (36, 2257655), (45, 1806124), (60, 1354593), (90, 903062), (180, 451531), (199, 408420), (398, 204210), (597, 136140), (796, 102105), (995, 81684), (1194, 68070), (1791, 45380), (1990, 40842), (2269, 35820), (2388, 34035), (2985, 27228), (3582, 22690), (3980, 20421), (4538, 17910), (5970, 13614), (6807, 11940), (7164, 11345), (8955, 9076)]