21377776

素因数分解:

$2^4\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1171}}^1$

素因数の和:1349

約数の個数: 40

約数和(自身を含む): 47667584

約数和(自身を除く): 26289808

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 163, 326, 652, 1141, 1171, 1304, 2282, 2342, 2608, 4564, 4684, 8197, 9128, 9368, 16394, 18256, 18736, 32788, 65576, 131152, 190873, 381746, 763492, 1336111, 1526984, 2672222, 3053968, 5344444, 10688888, 21377776]

約数ペア:

[(1, 21377776), (2, 10688888), (4, 5344444), (7, 3053968), (8, 2672222), (14, 1526984), (16, 1336111), (28, 763492), (56, 381746), (112, 190873), (163, 131152), (326, 65576), (652, 32788), (1141, 18736), (1171, 18256), (1304, 16394), (2282, 9368), (2342, 9128), (2608, 8197), (4564, 4684)]