678065968

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{421}}^1\times {\mathrm{2341}}^1$

素因数の和:2813

約数の個数: 40

約数和(自身を含む): 1348073936

約数和(自身を除く): 670007968

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 421, 688, 842, 1684, 2341, 3368, 4682, 6736, 9364, 18103, 18728, 36206, 37456, 72412, 100663, 144824, 201326, 289648, 402652, 805304, 985561, 1610608, 1971122, 3942244, 7884488, 15768976, 42379123, 84758246, 169516492, 339032984, 678065968]

約数ペア:

[(1, 678065968), (2, 339032984), (4, 169516492), (8, 84758246), (16, 42379123), (43, 15768976), (86, 7884488), (172, 3942244), (344, 1971122), (421, 1610608), (688, 985561), (842, 805304), (1684, 402652), (2341, 289648), (3368, 201326), (4682, 144824), (6736, 100663), (9364, 72412), (18103, 37456), (18728, 36206)]