19980735

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{613}}^1$

素因数の和:715

約数の個数: 32

約数和(自身を含む): 33421248

約数和(自身を除く): 13440513

約数列:

[1, 3, 5, 15, 41, 53, 123, 159, 205, 265, 613, 615, 795, 1839, 2173, 3065, 6519, 9195, 10865, 25133, 32489, 32595, 75399, 97467, 125665, 162445, 376995, 487335, 1332049, 3996147, 6660245, 19980735]

約数ペア:

[(1, 19980735), (3, 6660245), (5, 3996147), (15, 1332049), (41, 487335), (53, 376995), (123, 162445), (159, 125665), (205, 97467), (265, 75399), (613, 32595), (615, 32489), (795, 25133), (1839, 10865), (2173, 9195), (3065, 6519)]