21000480680

素因数分解:

$2^3\times 5^1\times {\mathrm{239}}^1\times {\mathrm{2196703}}^1$

素因数の和:2196953

約数の個数: 32

約数和(自身を含む): 47448806400

約数和(自身を除く): 26448325720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 239, 478, 956, 1195, 1912, 2390, 4780, 9560, 2196703, 4393406, 8786812, 10983515, 17573624, 21967030, 43934060, 87868120, 525012017, 1050024034, 2100048068, 2625060085, 4200096136, 5250120170, 10500240340, 21000480680]

約数ペア:

[(1, 21000480680), (2, 10500240340), (4, 5250120170), (5, 4200096136), (8, 2625060085), (10, 2100048068), (20, 1050024034), (40, 525012017), (239, 87868120), (478, 43934060), (956, 21967030), (1195, 17573624), (1912, 10983515), (2390, 8786812), (4780, 4393406), (9560, 2196703)]