21715665920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{326257}}^1$

素因数の和:326295

約数の個数: 88

約数和(自身を含む): 56099410584

約数和(自身を除く): 34383744664

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 640, 832, 1024, 1040, 1280, 1664, 2080, 2560, 3328, 4160, 5120, 6656, 8320, 13312, 16640, 33280, 66560, 326257, 652514, 1305028, 1631285, 2610056, 3262570, 4241341, 5220112, 6525140, 8482682, 10440224, 13050280, 16965364, 20880448, 21206705, 26100560, 33930728, 41760896, 42413410, 52201120, 67861456, 83521792, 84826820, 104402240, 135722912, 167043584, 169653640, 208804480, 271445824, 334087168, 339307280, 417608960, 542891648, 678614560, 835217920, 1085783296, 1357229120, 1670435840, 2171566592, 2714458240, 4343133184, 5428916480, 10857832960, 21715665920]

約数ペア:

[(1, 21715665920), (2, 10857832960), (4, 5428916480), (5, 4343133184), (8, 2714458240), (10, 2171566592), (13, 1670435840), (16, 1357229120), (20, 1085783296), (26, 835217920), (32, 678614560), (40, 542891648), (52, 417608960), (64, 339307280), (65, 334087168), (80, 271445824), (104, 208804480), (128, 169653640), (130, 167043584), (160, 135722912), (208, 104402240), (256, 84826820), (260, 83521792), (320, 67861456), (416, 52201120), (512, 42413410), (520, 41760896), (640, 33930728), (832, 26100560), (1024, 21206705), (1040, 20880448), (1280, 16965364), (1664, 13050280), (2080, 10440224), (2560, 8482682), (3328, 6525140), (4160, 5220112), (5120, 4241341), (6656, 3262570), (8320, 2610056), (13312, 1631285), (16640, 1305028), (33280, 652514), (66560, 326257)]