20803635

素因数分解:

$3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1657}}^1$

素因数の和:1705

約数の個数: 40

約数和(自身を含む): 38518656

約数和(自身を除く): 17715021

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 81, 93, 135, 155, 279, 405, 465, 837, 1395, 1657, 2511, 4185, 4971, 8285, 12555, 14913, 24855, 44739, 51367, 74565, 134217, 154101, 223695, 256835, 462303, 671085, 770505, 1386909, 2311515, 4160727, 6934545, 20803635]

約数ペア:

[(1, 20803635), (3, 6934545), (5, 4160727), (9, 2311515), (15, 1386909), (27, 770505), (31, 671085), (45, 462303), (81, 256835), (93, 223695), (135, 154101), (155, 134217), (279, 74565), (405, 51367), (465, 44739), (837, 24855), (1395, 14913), (1657, 12555), (2511, 8285), (4185, 4971)]