20287795

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:283

約数の個数: 32

約数和(自身を含む): 27961344

約数和(自身を除く): 7673549

約数列:

[1, 5, 11, 31, 55, 73, 155, 163, 341, 365, 803, 815, 1705, 1793, 2263, 4015, 5053, 8965, 11315, 11899, 24893, 25265, 55583, 59495, 124465, 130889, 277915, 368869, 654445, 1844345, 4057559, 20287795]

約数ペア:

[(1, 20287795), (5, 4057559), (11, 1844345), (31, 654445), (55, 368869), (73, 277915), (155, 130889), (163, 124465), (341, 59495), (365, 55583), (803, 25265), (815, 24893), (1705, 11899), (1793, 11315), (2263, 8965), (4015, 5053)]