20728845

素因数分解:

$3^3\times 5^1\times {\mathrm{233}}^1\times {\mathrm{659}}^1$

素因数の和:906

約数の個数: 32

約数和(自身を含む): 37065600

約数和(自身を除く): 16336755

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 233, 659, 699, 1165, 1977, 2097, 3295, 3495, 5931, 6291, 9885, 10485, 17793, 29655, 31455, 88965, 153547, 460641, 767735, 1381923, 2303205, 4145769, 6909615, 20728845]

約数ペア:

[(1, 20728845), (3, 6909615), (5, 4145769), (9, 2303205), (15, 1381923), (27, 767735), (45, 460641), (135, 153547), (233, 88965), (659, 31455), (699, 29655), (1165, 17793), (1977, 10485), (2097, 9885), (3295, 6291), (3495, 5931)]