68720740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:493

約数の個数: 72

約数和(自身を含む): 161211960

約数和(自身を除く): 92491220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 121, 146, 220, 242, 292, 365, 389, 484, 605, 730, 778, 803, 1210, 1460, 1556, 1606, 1945, 2420, 3212, 3890, 4015, 4279, 7780, 8030, 8558, 8833, 16060, 17116, 17666, 21395, 28397, 35332, 42790, 44165, 47069, 56794, 85580, 88330, 94138, 113588, 141985, 176660, 188276, 235345, 283970, 312367, 470690, 567940, 624734, 941380, 1249468, 1561835, 3123670, 3436037, 6247340, 6872074, 13744148, 17180185, 34360370, 68720740]

約数ペア:

[(1, 68720740), (2, 34360370), (4, 17180185), (5, 13744148), (10, 6872074), (11, 6247340), (20, 3436037), (22, 3123670), (44, 1561835), (55, 1249468), (73, 941380), (110, 624734), (121, 567940), (146, 470690), (220, 312367), (242, 283970), (292, 235345), (365, 188276), (389, 176660), (484, 141985), (605, 113588), (730, 94138), (778, 88330), (803, 85580), (1210, 56794), (1460, 47069), (1556, 44165), (1606, 42790), (1945, 35332), (2420, 28397), (3212, 21395), (3890, 17666), (4015, 17116), (4279, 16060), (7780, 8833), (8030, 8558)]