21039802

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{181}}^1$

素因数の和:251

約数の個数: 48

約数和(自身を含む): 39940992

約数和(自身を除く): 18901190

約数列:

[1, 2, 7, 14, 19, 23, 38, 46, 133, 161, 181, 266, 322, 361, 362, 437, 722, 874, 1267, 2527, 2534, 3059, 3439, 4163, 5054, 6118, 6878, 8303, 8326, 16606, 24073, 29141, 48146, 58121, 58282, 65341, 79097, 116242, 130682, 158194, 457387, 553679, 914774, 1107358, 1502843, 3005686, 10519901, 21039802]

約数ペア:

[(1, 21039802), (2, 10519901), (7, 3005686), (14, 1502843), (19, 1107358), (23, 914774), (38, 553679), (46, 457387), (133, 158194), (161, 130682), (181, 116242), (266, 79097), (322, 65341), (361, 58282), (362, 58121), (437, 48146), (722, 29141), (874, 24073), (1267, 16606), (2527, 8326), (2534, 8303), (3059, 6878), (3439, 6118), (4163, 5054)]