21498776

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{151}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 44911440

約数和(自身を除く): 23412664

約数列:

[1, 2, 4, 8, 13, 26, 37, 52, 74, 104, 148, 151, 296, 302, 481, 604, 962, 1208, 1369, 1924, 1963, 2738, 3848, 3926, 5476, 5587, 7852, 10952, 11174, 15704, 17797, 22348, 35594, 44696, 71188, 72631, 142376, 145262, 206719, 290524, 413438, 581048, 826876, 1653752, 2687347, 5374694, 10749388, 21498776]

約数ペア:

[(1, 21498776), (2, 10749388), (4, 5374694), (8, 2687347), (13, 1653752), (26, 826876), (37, 581048), (52, 413438), (74, 290524), (104, 206719), (148, 145262), (151, 142376), (296, 72631), (302, 71188), (481, 44696), (604, 35594), (962, 22348), (1208, 17797), (1369, 15704), (1924, 11174), (1963, 10952), (2738, 7852), (3848, 5587), (3926, 5476)]