680561960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1308773}}^1$

素因数の和:1308797

約数の個数: 32

約数和(自身を含む): 1649055240

約数和(自身を除く): 968493280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1308773, 2617546, 5235092, 6543865, 10470184, 13087730, 17014049, 26175460, 34028098, 52350920, 68056196, 85070245, 136112392, 170140490, 340280980, 680561960]

約数ペア:

[(1, 680561960), (2, 340280980), (4, 170140490), (5, 136112392), (8, 85070245), (10, 68056196), (13, 52350920), (20, 34028098), (26, 26175460), (40, 17014049), (52, 13087730), (65, 10470184), (104, 6543865), (130, 5235092), (260, 2617546), (520, 1308773)]