18897580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{5591}}^1$

素因数の和:5626

約数の個数: 36

約数和(自身を含む): 42980112

約数和(自身を除く): 24082532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 5591, 11182, 22364, 27955, 55910, 72683, 111820, 145366, 290732, 363415, 726830, 944879, 1453660, 1889758, 3779516, 4724395, 9448790, 18897580]

約数ペア:

[(1, 18897580), (2, 9448790), (4, 4724395), (5, 3779516), (10, 1889758), (13, 1453660), (20, 944879), (26, 726830), (52, 363415), (65, 290732), (130, 145366), (169, 111820), (260, 72683), (338, 55910), (676, 27955), (845, 22364), (1690, 11182), (3380, 5591)]