201996920

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{12347}}^1$

素因数の和:12767

約数の個数: 32

約数和(自身を含む): 455641200

約数和(自身を除く): 253644280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4090, 8180, 12347, 16360, 24694, 49388, 61735, 98776, 123470, 246940, 493880, 5049923, 10099846, 20199692, 25249615, 40399384, 50499230, 100998460, 201996920]

約数ペア:

[(1, 201996920), (2, 100998460), (4, 50499230), (5, 40399384), (8, 25249615), (10, 20199692), (20, 10099846), (40, 5049923), (409, 493880), (818, 246940), (1636, 123470), (2045, 98776), (3272, 61735), (4090, 49388), (8180, 24694), (12347, 16360)]