21205736

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{2311}}^1$

素因数の和:2385

約数の個数: 32

約数和(自身を含む): 42170880

約数和(自身を除く): 20965144

約数列:

[1, 2, 4, 8, 31, 37, 62, 74, 124, 148, 248, 296, 1147, 2294, 2311, 4588, 4622, 9176, 9244, 18488, 71641, 85507, 143282, 171014, 286564, 342028, 573128, 684056, 2650717, 5301434, 10602868, 21205736]

約数ペア:

[(1, 21205736), (2, 10602868), (4, 5301434), (8, 2650717), (31, 684056), (37, 573128), (62, 342028), (74, 286564), (124, 171014), (148, 143282), (248, 85507), (296, 71641), (1147, 18488), (2294, 9244), (2311, 9176), (4588, 4622)]