21669872

素因数分解:

$2^4\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1187}}^1$

素因数の和:1365

約数の個数: 40

約数和(自身を含む): 48318336

約数和(自身を除く): 26648464

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 163, 326, 652, 1141, 1187, 1304, 2282, 2374, 2608, 4564, 4748, 8309, 9128, 9496, 16618, 18256, 18992, 33236, 66472, 132944, 193481, 386962, 773924, 1354367, 1547848, 2708734, 3095696, 5417468, 10834936, 21669872]

約数ペア:

[(1, 21669872), (2, 10834936), (4, 5417468), (7, 3095696), (8, 2708734), (14, 1547848), (16, 1354367), (28, 773924), (56, 386962), (112, 193481), (163, 132944), (326, 66472), (652, 33236), (1141, 18992), (1187, 18256), (1304, 16618), (2282, 9496), (2374, 9128), (2608, 8309), (4564, 4748)]