18979980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{2309}}^1$

素因数の和:2458

約数の個数: 48

約数和(自身を含む): 53555040

約数和(自身を除く): 34575060

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 137, 274, 411, 548, 685, 822, 1370, 1644, 2055, 2309, 2740, 4110, 4618, 6927, 8220, 9236, 11545, 13854, 23090, 27708, 34635, 46180, 69270, 138540, 316333, 632666, 948999, 1265332, 1581665, 1897998, 3163330, 3795996, 4744995, 6326660, 9489990, 18979980]

約数ペア:

[(1, 18979980), (2, 9489990), (3, 6326660), (4, 4744995), (5, 3795996), (6, 3163330), (10, 1897998), (12, 1581665), (15, 1265332), (20, 948999), (30, 632666), (60, 316333), (137, 138540), (274, 69270), (411, 46180), (548, 34635), (685, 27708), (822, 23090), (1370, 13854), (1644, 11545), (2055, 9236), (2309, 8220), (2740, 6927), (4110, 4618)]