21080440

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{11213}}^1$

素因数の和:11271

約数の個数: 32

約数和(自身を含む): 48444480

約数和(自身を除く): 27364040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 11213, 22426, 44852, 56065, 89704, 112130, 224260, 448520, 527011, 1054022, 2108044, 2635055, 4216088, 5270110, 10540220, 21080440]

約数ペア:

[(1, 21080440), (2, 10540220), (4, 5270110), (5, 4216088), (8, 2635055), (10, 2108044), (20, 1054022), (40, 527011), (47, 448520), (94, 224260), (188, 112130), (235, 89704), (376, 56065), (470, 44852), (940, 22426), (1880, 11213)]