639819796

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{499}}^1$

素因数の和:725

約数の個数: 96

約数和(自身を含む): 1467648000

約数和(自身を除く): 827828204

約数列:

[1, 2, 4, 7, 11, 14, 22, 23, 28, 44, 46, 77, 92, 154, 161, 181, 253, 308, 322, 362, 499, 506, 644, 724, 998, 1012, 1267, 1771, 1991, 1996, 2534, 3493, 3542, 3982, 4163, 5068, 5489, 6986, 7084, 7964, 8326, 10978, 11477, 13937, 13972, 16652, 21956, 22954, 27874, 29141, 38423, 45793, 45908, 55748, 58282, 76846, 80339, 90319, 91586, 116564, 126247, 153692, 160678, 180638, 183172, 252494, 320551, 321356, 361276, 504988, 632233, 641102, 883729, 993509, 1264466, 1282204, 1767458, 1987018, 2077337, 2528932, 3534916, 3974036, 4154674, 6954563, 8309348, 13909126, 14541359, 22850707, 27818252, 29082718, 45701414, 58165436, 91402828, 159954949, 319909898, 639819796]

約数ペア:

[(1, 639819796), (2, 319909898), (4, 159954949), (7, 91402828), (11, 58165436), (14, 45701414), (22, 29082718), (23, 27818252), (28, 22850707), (44, 14541359), (46, 13909126), (77, 8309348), (92, 6954563), (154, 4154674), (161, 3974036), (181, 3534916), (253, 2528932), (308, 2077337), (322, 1987018), (362, 1767458), (499, 1282204), (506, 1264466), (644, 993509), (724, 883729), (998, 641102), (1012, 632233), (1267, 504988), (1771, 361276), (1991, 321356), (1996, 320551), (2534, 252494), (3493, 183172), (3542, 180638), (3982, 160678), (4163, 153692), (5068, 126247), (5489, 116564), (6986, 91586), (7084, 90319), (7964, 80339), (8326, 76846), (10978, 58282), (11477, 55748), (13937, 45908), (13972, 45793), (16652, 38423), (21956, 29141), (22954, 27874)]