420864980

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{2341}}^1$

素因数の和:2540

約数の個数: 48

約数和(自身を含む): 902981520

約数和(自身を除く): 482116540

約数列:

[1, 2, 4, 5, 10, 20, 89, 101, 178, 202, 356, 404, 445, 505, 890, 1010, 1780, 2020, 2341, 4682, 8989, 9364, 11705, 17978, 23410, 35956, 44945, 46820, 89890, 179780, 208349, 236441, 416698, 472882, 833396, 945764, 1041745, 1182205, 2083490, 2364410, 4166980, 4728820, 21043249, 42086498, 84172996, 105216245, 210432490, 420864980]

約数ペア:

[(1, 420864980), (2, 210432490), (4, 105216245), (5, 84172996), (10, 42086498), (20, 21043249), (89, 4728820), (101, 4166980), (178, 2364410), (202, 2083490), (356, 1182205), (404, 1041745), (445, 945764), (505, 833396), (890, 472882), (1010, 416698), (1780, 236441), (2020, 208349), (2341, 179780), (4682, 89890), (8989, 46820), (9364, 44945), (11705, 35956), (17978, 23410)]