655981780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{659}}^1\times {\mathrm{701}}^1$

素因数の和:1440

約数の個数: 48

約数和(自身を含む): 1401079680

約数和(自身を除く): 745097900

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 659, 701, 710, 1318, 1402, 1420, 2636, 2804, 3295, 3505, 6590, 7010, 13180, 14020, 46789, 49771, 93578, 99542, 187156, 199084, 233945, 248855, 461959, 467890, 497710, 923918, 935780, 995420, 1847836, 2309795, 4619590, 9239180, 32799089, 65598178, 131196356, 163995445, 327990890, 655981780]

約数ペア:

[(1, 655981780), (2, 327990890), (4, 163995445), (5, 131196356), (10, 65598178), (20, 32799089), (71, 9239180), (142, 4619590), (284, 2309795), (355, 1847836), (659, 995420), (701, 935780), (710, 923918), (1318, 497710), (1402, 467890), (1420, 461959), (2636, 248855), (2804, 233945), (3295, 199084), (3505, 187156), (6590, 99542), (7010, 93578), (13180, 49771), (14020, 46789)]