19699518

素因数分解:

$2^1\times 3^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{353}}^1$

素因数の和:560

約数の個数: 32

約数和(自身を含む): 40372992

約数和(自身を除く): 20673474

約数列:

[1, 2, 3, 6, 71, 131, 142, 213, 262, 353, 393, 426, 706, 786, 1059, 2118, 9301, 18602, 25063, 27903, 46243, 50126, 55806, 75189, 92486, 138729, 150378, 277458, 3283253, 6566506, 9849759, 19699518]

約数ペア:

[(1, 19699518), (2, 9849759), (3, 6566506), (6, 3283253), (71, 277458), (131, 150378), (142, 138729), (213, 92486), (262, 75189), (353, 55806), (393, 50126), (426, 46243), (706, 27903), (786, 25063), (1059, 18602), (2118, 9301)]