18823760

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13841}}^1$

素因数の和:13871

約数の個数: 40

約数和(自身を含む): 46343016

約数和(自身を除く): 27519256

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 13841, 27682, 55364, 69205, 110728, 138410, 221456, 235297, 276820, 470594, 553640, 941188, 1107280, 1176485, 1882376, 2352970, 3764752, 4705940, 9411880, 18823760]

約数ペア:

[(1, 18823760), (2, 9411880), (4, 4705940), (5, 3764752), (8, 2352970), (10, 1882376), (16, 1176485), (17, 1107280), (20, 941188), (34, 553640), (40, 470594), (68, 276820), (80, 235297), (85, 221456), (136, 138410), (170, 110728), (272, 69205), (340, 55364), (680, 27682), (1360, 13841)]