20261800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7793}}^1$

素因数の和:7822

約数の個数: 48

約数和(自身を含む): 50738940

約数和(自身を除く): 30477140

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 7793, 15586, 31172, 38965, 62344, 77930, 101309, 155860, 194825, 202618, 311720, 389650, 405236, 506545, 779300, 810472, 1013090, 1558600, 2026180, 2532725, 4052360, 5065450, 10130900, 20261800]

約数ペア:

[(1, 20261800), (2, 10130900), (4, 5065450), (5, 4052360), (8, 2532725), (10, 2026180), (13, 1558600), (20, 1013090), (25, 810472), (26, 779300), (40, 506545), (50, 405236), (52, 389650), (65, 311720), (100, 202618), (104, 194825), (130, 155860), (200, 101309), (260, 77930), (325, 62344), (520, 38965), (650, 31172), (1300, 15586), (2600, 7793)]