91019980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{1129}}^1$

素因数の和:1306

約数の個数: 48

約数和(自身を含む): 199332000

約数和(自身を除く): 108312020

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 278, 290, 556, 580, 695, 1129, 1390, 2258, 2780, 4031, 4516, 5645, 8062, 11290, 16124, 20155, 22580, 32741, 40310, 65482, 80620, 130964, 156931, 163705, 313862, 327410, 627724, 654820, 784655, 1569310, 3138620, 4550999, 9101998, 18203996, 22754995, 45509990, 91019980]

約数ペア:

[(1, 91019980), (2, 45509990), (4, 22754995), (5, 18203996), (10, 9101998), (20, 4550999), (29, 3138620), (58, 1569310), (116, 784655), (139, 654820), (145, 627724), (278, 327410), (290, 313862), (556, 163705), (580, 156931), (695, 130964), (1129, 80620), (1390, 65482), (2258, 40310), (2780, 32741), (4031, 22580), (4516, 20155), (5645, 16124), (8062, 11290)]