18700240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17981}}^1$

素因数の和:18007

約数の個数: 40

約数和(自身を含む): 46825128

約数和(自身を除く): 28124888

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 17981, 35962, 71924, 89905, 143848, 179810, 233753, 287696, 359620, 467506, 719240, 935012, 1168765, 1438480, 1870024, 2337530, 3740048, 4675060, 9350120, 18700240]

約数ペア:

[(1, 18700240), (2, 9350120), (4, 4675060), (5, 3740048), (8, 2337530), (10, 1870024), (13, 1438480), (16, 1168765), (20, 935012), (26, 719240), (40, 467506), (52, 359620), (65, 287696), (80, 233753), (104, 179810), (130, 143848), (208, 89905), (260, 71924), (520, 35962), (1040, 17981)]