20805435

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{257}}^2$

素因数の和:532

約数の個数: 36

約数和(自身を含む): 41375568

約数和(自身を除く): 20570133

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 257, 315, 771, 1285, 1799, 2313, 3855, 5397, 8995, 11565, 16191, 26985, 66049, 80955, 198147, 330245, 462343, 594441, 990735, 1387029, 2311715, 2972205, 4161087, 6935145, 20805435]

約数ペア:

[(1, 20805435), (3, 6935145), (5, 4161087), (7, 2972205), (9, 2311715), (15, 1387029), (21, 990735), (35, 594441), (45, 462343), (63, 330245), (105, 198147), (257, 80955), (315, 66049), (771, 26985), (1285, 16191), (1799, 11565), (2313, 8995), (3855, 5397)]