20311304

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{541}}^1$

素因数の和:598

約数の個数: 48

約数和(自身を含む): 43365420

約数和(自身を除く): 23054116

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 361, 494, 541, 722, 988, 1082, 1444, 1976, 2164, 2888, 4328, 4693, 7033, 9386, 10279, 14066, 18772, 20558, 28132, 37544, 41116, 56264, 82232, 133627, 195301, 267254, 390602, 534508, 781204, 1069016, 1562408, 2538913, 5077826, 10155652, 20311304]

約数ペア:

[(1, 20311304), (2, 10155652), (4, 5077826), (8, 2538913), (13, 1562408), (19, 1069016), (26, 781204), (38, 534508), (52, 390602), (76, 267254), (104, 195301), (152, 133627), (247, 82232), (361, 56264), (494, 41116), (541, 37544), (722, 28132), (988, 20558), (1082, 18772), (1444, 14066), (1976, 10279), (2164, 9386), (2888, 7033), (4328, 4693)]