21820436

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{607}}^1$

素因数の和:684

約数の個数: 48

約数和(自身を含む): 44943360

約数和(自身を除く): 23122924

約数列:

[1, 2, 4, 11, 19, 22, 38, 43, 44, 76, 86, 172, 209, 418, 473, 607, 817, 836, 946, 1214, 1634, 1892, 2428, 3268, 6677, 8987, 11533, 13354, 17974, 23066, 26101, 26708, 35948, 46132, 52202, 104404, 126863, 253726, 287111, 495919, 507452, 574222, 991838, 1148444, 1983676, 5455109, 10910218, 21820436]

約数ペア:

[(1, 21820436), (2, 10910218), (4, 5455109), (11, 1983676), (19, 1148444), (22, 991838), (38, 574222), (43, 507452), (44, 495919), (76, 287111), (86, 253726), (172, 126863), (209, 104404), (418, 52202), (473, 46132), (607, 35948), (817, 26708), (836, 26101), (946, 23066), (1214, 17974), (1634, 13354), (1892, 11533), (2428, 8987), (3268, 6677)]