18903820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72707}}^1$

素因数の和:72729

約数の個数: 24

約数和(自身を含む): 42752304

約数和(自身を除く): 23848484

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72707, 145414, 290828, 363535, 727070, 945191, 1454140, 1890382, 3780764, 4725955, 9451910, 18903820]

約数ペア:

[(1, 18903820), (2, 9451910), (4, 4725955), (5, 3780764), (10, 1890382), (13, 1454140), (20, 945191), (26, 727070), (52, 363535), (65, 290828), (130, 145414), (260, 72707)]