21731540

素因数分解:

$2^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{2357}}^1$

素因数の和:2827

約数の個数: 24

約数和(自身を含む): 45754632

約数和(自身を除く): 24023092

約数列:

[1, 2, 4, 5, 10, 20, 461, 922, 1844, 2305, 2357, 4610, 4714, 9220, 9428, 11785, 23570, 47140, 1086577, 2173154, 4346308, 5432885, 10865770, 21731540]

約数ペア:

[(1, 21731540), (2, 10865770), (4, 5432885), (5, 4346308), (10, 2173154), (20, 1086577), (461, 47140), (922, 23570), (1844, 11785), (2305, 9428), (2357, 9220), (4610, 4714)]