21949640

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7517}}^1$

素因数の和:7601

約数の個数: 32

約数和(自身を含む): 50069880

約数和(自身を除く): 28120240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7517, 15034, 30068, 37585, 60136, 75170, 150340, 300680, 548741, 1097482, 2194964, 2743705, 4389928, 5487410, 10974820, 21949640]

約数ペア:

[(1, 21949640), (2, 10974820), (4, 5487410), (5, 4389928), (8, 2743705), (10, 2194964), (20, 1097482), (40, 548741), (73, 300680), (146, 150340), (292, 75170), (365, 60136), (584, 37585), (730, 30068), (1460, 15034), (2920, 7517)]