20218676540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{449}}^1\times {\mathrm{52361}}^1$

素因数の和:52862

約数の個数: 48

約数和(自身を含む): 43544239200

約数和(自身を除く): 23325562660

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 449, 860, 898, 1796, 2245, 4490, 8980, 19307, 38614, 52361, 77228, 96535, 104722, 193070, 209444, 261805, 386140, 523610, 1047220, 2251523, 4503046, 9006092, 11257615, 22515230, 23510089, 45030460, 47020178, 94040356, 117550445, 235100890, 470201780, 1010933827, 2021867654, 4043735308, 5054669135, 10109338270, 20218676540]

約数ペア:

[(1, 20218676540), (2, 10109338270), (4, 5054669135), (5, 4043735308), (10, 2021867654), (20, 1010933827), (43, 470201780), (86, 235100890), (172, 117550445), (215, 94040356), (430, 47020178), (449, 45030460), (860, 23510089), (898, 22515230), (1796, 11257615), (2245, 9006092), (4490, 4503046), (8980, 2251523), (19307, 1047220), (38614, 523610), (52361, 386140), (77228, 261805), (96535, 209444), (104722, 193070)]