21805030

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{4091}}^1$

素因数の和:4152

約数の個数: 32

約数和(自身を含む): 43309728

約数和(自身を除く): 21504698

約数列:

[1, 2, 5, 10, 13, 26, 41, 65, 82, 130, 205, 410, 533, 1066, 2665, 4091, 5330, 8182, 20455, 40910, 53183, 106366, 167731, 265915, 335462, 531830, 838655, 1677310, 2180503, 4361006, 10902515, 21805030]

約数ペア:

[(1, 21805030), (2, 10902515), (5, 4361006), (10, 2180503), (13, 1677310), (26, 838655), (41, 531830), (65, 335462), (82, 265915), (130, 167731), (205, 106366), (410, 53183), (533, 40910), (1066, 20455), (2665, 8182), (4091, 5330)]