13215620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:201

約数の個数: 72

約数和(自身を含む): 31460352

約数和(自身を除く): 18244732

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 121, 127, 172, 215, 220, 242, 254, 430, 473, 484, 508, 605, 635, 860, 946, 1210, 1270, 1397, 1892, 2365, 2420, 2540, 2794, 4730, 5203, 5461, 5588, 6985, 9460, 10406, 10922, 13970, 15367, 20812, 21844, 26015, 27305, 27940, 30734, 52030, 54610, 60071, 61468, 76835, 104060, 109220, 120142, 153670, 240284, 300355, 307340, 600710, 660781, 1201420, 1321562, 2643124, 3303905, 6607810, 13215620]

約数ペア:

[(1, 13215620), (2, 6607810), (4, 3303905), (5, 2643124), (10, 1321562), (11, 1201420), (20, 660781), (22, 600710), (43, 307340), (44, 300355), (55, 240284), (86, 153670), (110, 120142), (121, 109220), (127, 104060), (172, 76835), (215, 61468), (220, 60071), (242, 54610), (254, 52030), (430, 30734), (473, 27940), (484, 27305), (508, 26015), (605, 21844), (635, 20812), (860, 15367), (946, 13970), (1210, 10922), (1270, 10406), (1397, 9460), (1892, 6985), (2365, 5588), (2420, 5461), (2540, 5203), (2794, 4730)]