20639388

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{3191}}^1$

素因数の和:3223

約数の個数: 72

約数和(自身を含む): 61133184

約数和(自身を除く): 40493796

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 33, 42, 44, 49, 66, 77, 84, 98, 132, 147, 154, 196, 231, 294, 308, 462, 539, 588, 924, 1078, 1617, 2156, 3191, 3234, 6382, 6468, 9573, 12764, 19146, 22337, 35101, 38292, 44674, 67011, 70202, 89348, 105303, 134022, 140404, 156359, 210606, 245707, 268044, 312718, 421212, 469077, 491414, 625436, 737121, 938154, 982828, 1474242, 1719949, 1876308, 2948484, 3439898, 5159847, 6879796, 10319694, 20639388]

約数ペア:

[(1, 20639388), (2, 10319694), (3, 6879796), (4, 5159847), (6, 3439898), (7, 2948484), (11, 1876308), (12, 1719949), (14, 1474242), (21, 982828), (22, 938154), (28, 737121), (33, 625436), (42, 491414), (44, 469077), (49, 421212), (66, 312718), (77, 268044), (84, 245707), (98, 210606), (132, 156359), (147, 140404), (154, 134022), (196, 105303), (231, 89348), (294, 70202), (308, 67011), (462, 44674), (539, 38292), (588, 35101), (924, 22337), (1078, 19146), (1617, 12764), (2156, 9573), (3191, 6468), (3234, 6382)]