21060460

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{2707}}^1$

素因数の和:3105

約数の個数: 24

約数和(自身を含む): 44357040

約数和(自身を除く): 23296580

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 2707, 3890, 5414, 7780, 10828, 13535, 27070, 54140, 1053023, 2106046, 4212092, 5265115, 10530230, 21060460]

約数ペア:

[(1, 21060460), (2, 10530230), (4, 5265115), (5, 4212092), (10, 2106046), (20, 1053023), (389, 54140), (778, 27070), (1556, 13535), (1945, 10828), (2707, 7780), (3890, 5414)]