197619620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{127}}^1\times {\mathrm{643}}^1$

素因数の和:801

約数の個数: 72

約数和(自身を含む): 460465152

約数和(自身を除く): 262845532

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 127, 220, 242, 254, 484, 508, 605, 635, 643, 1210, 1270, 1286, 1397, 2420, 2540, 2572, 2794, 3215, 5588, 6430, 6985, 7073, 12860, 13970, 14146, 15367, 27940, 28292, 30734, 35365, 61468, 70730, 76835, 77803, 81661, 141460, 153670, 155606, 163322, 307340, 311212, 326644, 389015, 408305, 778030, 816610, 898271, 1556060, 1633220, 1796542, 3593084, 4491355, 8982710, 9880981, 17965420, 19761962, 39523924, 49404905, 98809810, 197619620]

約数ペア:

[(1, 197619620), (2, 98809810), (4, 49404905), (5, 39523924), (10, 19761962), (11, 17965420), (20, 9880981), (22, 8982710), (44, 4491355), (55, 3593084), (110, 1796542), (121, 1633220), (127, 1556060), (220, 898271), (242, 816610), (254, 778030), (484, 408305), (508, 389015), (605, 326644), (635, 311212), (643, 307340), (1210, 163322), (1270, 155606), (1286, 153670), (1397, 141460), (2420, 81661), (2540, 77803), (2572, 76835), (2794, 70730), (3215, 61468), (5588, 35365), (6430, 30734), (6985, 28292), (7073, 27940), (12860, 15367), (13970, 14146)]