18915910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{641}}^1$

素因数の和:888

約数の個数: 32

約数和(自身を含む): 36886752

約数和(自身を除く): 17970842

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 227, 454, 641, 1135, 1282, 2270, 2951, 3205, 5902, 6410, 8333, 14755, 16666, 29510, 41665, 83330, 145507, 291014, 727535, 1455070, 1891591, 3783182, 9457955, 18915910]

約数ペア:

[(1, 18915910), (2, 9457955), (5, 3783182), (10, 1891591), (13, 1455070), (26, 727535), (65, 291014), (130, 145507), (227, 83330), (454, 41665), (641, 29510), (1135, 16666), (1282, 14755), (2270, 8333), (2951, 6410), (3205, 5902)]