64854080

素因数分解:

$2^6\times 5^1\times {\mathrm{389}}^1\times {\mathrm{521}}^1$

素因数の和:927

約数の個数: 56

約数和(自身を含む): 155127960

約数和(自身を除く): 90273880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 389, 521, 778, 1042, 1556, 1945, 2084, 2605, 3112, 3890, 4168, 5210, 6224, 7780, 8336, 10420, 12448, 15560, 16672, 20840, 24896, 31120, 33344, 41680, 62240, 83360, 124480, 166720, 202669, 405338, 810676, 1013345, 1621352, 2026690, 3242704, 4053380, 6485408, 8106760, 12970816, 16213520, 32427040, 64854080]

約数ペア:

[(1, 64854080), (2, 32427040), (4, 16213520), (5, 12970816), (8, 8106760), (10, 6485408), (16, 4053380), (20, 3242704), (32, 2026690), (40, 1621352), (64, 1013345), (80, 810676), (160, 405338), (320, 202669), (389, 166720), (521, 124480), (778, 83360), (1042, 62240), (1556, 41680), (1945, 33344), (2084, 31120), (2605, 24896), (3112, 20840), (3890, 16672), (4168, 15560), (5210, 12448), (6224, 10420), (7780, 8336)]