20329640

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{1327}}^1$

素因数の和:1721

約数の個数: 32

約数和(自身を含む): 45895680

約数和(自身を除く): 25566040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1327, 1532, 1915, 2654, 3064, 3830, 5308, 6635, 7660, 10616, 13270, 15320, 26540, 53080, 508241, 1016482, 2032964, 2541205, 4065928, 5082410, 10164820, 20329640]

約数ペア:

[(1, 20329640), (2, 10164820), (4, 5082410), (5, 4065928), (8, 2541205), (10, 2032964), (20, 1016482), (40, 508241), (383, 53080), (766, 26540), (1327, 15320), (1532, 13270), (1915, 10616), (2654, 7660), (3064, 6635), (3830, 5308)]