1380989240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1113701}}^1$

素因数の和:1113743

約数の個数: 32

約数和(自身を含む): 3207461760

約数和(自身を除く): 1826472520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 1113701, 2227402, 4454804, 5568505, 8909608, 11137010, 22274020, 34524731, 44548040, 69049462, 138098924, 172623655, 276197848, 345247310, 690494620, 1380989240]

約数ペア:

[(1, 1380989240), (2, 690494620), (4, 345247310), (5, 276197848), (8, 172623655), (10, 138098924), (20, 69049462), (31, 44548040), (40, 34524731), (62, 22274020), (124, 11137010), (155, 8909608), (248, 5568505), (310, 4454804), (620, 2227402), (1240, 1113701)]