778869820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{9661}}^1$

素因数の和:9838

約数の個数: 48

約数和(自身を含む): 1704376800

約数和(自身を除く): 925506980

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 278, 290, 556, 580, 695, 1390, 2780, 4031, 8062, 9661, 16124, 19322, 20155, 38644, 40310, 48305, 80620, 96610, 193220, 280169, 560338, 1120676, 1342879, 1400845, 2685758, 2801690, 5371516, 5603380, 6714395, 13428790, 26857580, 38943491, 77886982, 155773964, 194717455, 389434910, 778869820]

約数ペア:

[(1, 778869820), (2, 389434910), (4, 194717455), (5, 155773964), (10, 77886982), (20, 38943491), (29, 26857580), (58, 13428790), (116, 6714395), (139, 5603380), (145, 5371516), (278, 2801690), (290, 2685758), (556, 1400845), (580, 1342879), (695, 1120676), (1390, 560338), (2780, 280169), (4031, 193220), (8062, 96610), (9661, 80620), (16124, 48305), (19322, 40310), (20155, 38644)]