21520360

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{11447}}^1$

素因数の和:11505

約数の個数: 32

約数和(自身を含む): 49455360

約数和(自身を除く): 27935000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 11447, 22894, 45788, 57235, 91576, 114470, 228940, 457880, 538009, 1076018, 2152036, 2690045, 4304072, 5380090, 10760180, 21520360]

約数ペア:

[(1, 21520360), (2, 10760180), (4, 5380090), (5, 4304072), (8, 2690045), (10, 2152036), (20, 1076018), (40, 538009), (47, 457880), (94, 228940), (188, 114470), (235, 91576), (376, 57235), (470, 45788), (940, 22894), (1880, 11447)]