21897420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2239}}^1$

素因数の和:2414

約数の個数: 48

約数和(自身を含む): 61716480

約数和(自身を除く): 39819060

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 163, 326, 489, 652, 815, 978, 1630, 1956, 2239, 2445, 3260, 4478, 4890, 6717, 8956, 9780, 11195, 13434, 22390, 26868, 33585, 44780, 67170, 134340, 364957, 729914, 1094871, 1459828, 1824785, 2189742, 3649570, 4379484, 5474355, 7299140, 10948710, 21897420]

約数ペア:

[(1, 21897420), (2, 10948710), (3, 7299140), (4, 5474355), (5, 4379484), (6, 3649570), (10, 2189742), (12, 1824785), (15, 1459828), (20, 1094871), (30, 729914), (60, 364957), (163, 134340), (326, 67170), (489, 44780), (652, 33585), (815, 26868), (978, 22390), (1630, 13434), (1956, 11195), (2239, 9780), (2445, 8956), (3260, 6717), (4478, 4890)]