664707981

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{47}}^2\times {\mathrm{89}}^1$

素因数の和:223

約数の個数: 72

約数和(自身を含む): 1111527360

約数和(自身を除く): 446819379

約数列:

[1, 3, 7, 21, 23, 47, 49, 69, 89, 141, 147, 161, 267, 329, 483, 623, 987, 1081, 1127, 1869, 2047, 2209, 2303, 3243, 3381, 4183, 4361, 6141, 6627, 6909, 7567, 12549, 13083, 14329, 15463, 22701, 29281, 42987, 46389, 50807, 52969, 87843, 96209, 100303, 108241, 152421, 158907, 196601, 204967, 288627, 300909, 324723, 355649, 589803, 614901, 673463, 1066947, 1376207, 2020389, 2489543, 4128621, 4521823, 4714241, 7468629, 9633449, 13565469, 14142723, 28900347, 31652761, 94958283, 221569327, 664707981]

約数ペア:

[(1, 664707981), (3, 221569327), (7, 94958283), (21, 31652761), (23, 28900347), (47, 14142723), (49, 13565469), (69, 9633449), (89, 7468629), (141, 4714241), (147, 4521823), (161, 4128621), (267, 2489543), (329, 2020389), (483, 1376207), (623, 1066947), (987, 673463), (1081, 614901), (1127, 589803), (1869, 355649), (2047, 324723), (2209, 300909), (2303, 288627), (3243, 204967), (3381, 196601), (4183, 158907), (4361, 152421), (6141, 108241), (6627, 100303), (6909, 96209), (7567, 87843), (12549, 52969), (13083, 50807), (14329, 46389), (15463, 42987), (22701, 29281)]