19920345

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{409}}^1$

素因数の和:625

約数の個数: 32

約数和(自身を含む): 34007040

約数和(自身を除く): 14086695

約数列:

[1, 3, 5, 15, 17, 51, 85, 191, 255, 409, 573, 955, 1227, 2045, 2865, 3247, 6135, 6953, 9741, 16235, 20859, 34765, 48705, 78119, 104295, 234357, 390595, 1171785, 1328023, 3984069, 6640115, 19920345]

約数ペア:

[(1, 19920345), (3, 6640115), (5, 3984069), (15, 1328023), (17, 1171785), (51, 390595), (85, 234357), (191, 104295), (255, 78119), (409, 48705), (573, 34765), (955, 20859), (1227, 16235), (2045, 9741), (2865, 6953), (3247, 6135)]