20172779788

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{621619}}^1$

素因数の和:621710

約数の個数: 48

約数和(自身を含む): 43165292800

約数和(自身を除く): 22992513012

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 61, 76, 122, 133, 244, 266, 427, 532, 854, 1159, 1708, 2318, 4636, 8113, 16226, 32452, 621619, 1243238, 2486476, 4351333, 8702666, 11810761, 17405332, 23621522, 37918759, 47243044, 75837518, 82675327, 151675036, 165350654, 265431313, 330701308, 530862626, 720456421, 1061725252, 1440912842, 2881825684, 5043194947, 10086389894, 20172779788]

約数ペア:

[(1, 20172779788), (2, 10086389894), (4, 5043194947), (7, 2881825684), (14, 1440912842), (19, 1061725252), (28, 720456421), (38, 530862626), (61, 330701308), (76, 265431313), (122, 165350654), (133, 151675036), (244, 82675327), (266, 75837518), (427, 47243044), (532, 37918759), (854, 23621522), (1159, 17405332), (1708, 11810761), (2318, 8702666), (4636, 4351333), (8113, 2486476), (16226, 1243238), (32452, 621619)]