8443240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1249}}^1$

素因数の和:1286

約数の個数: 48

約数和(自身を含む): 20587500

約数和(自身を除く): 12144260

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1249, 1352, 1690, 2498, 3380, 4996, 6245, 6760, 9992, 12490, 16237, 24980, 32474, 49960, 64948, 81185, 129896, 162370, 211081, 324740, 422162, 649480, 844324, 1055405, 1688648, 2110810, 4221620, 8443240]

約数ペア:

[(1, 8443240), (2, 4221620), (4, 2110810), (5, 1688648), (8, 1055405), (10, 844324), (13, 649480), (20, 422162), (26, 324740), (40, 211081), (52, 162370), (65, 129896), (104, 81185), (130, 64948), (169, 49960), (260, 32474), (338, 24980), (520, 16237), (676, 12490), (845, 9992), (1249, 6760), (1352, 6245), (1690, 4996), (2498, 3380)]