18890170

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{439}}^1$

素因数の和:790

約数の個数: 32

約数和(自身を含む): 36812160

約数和(自身を除く): 17921990

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 331, 439, 662, 878, 1655, 2195, 3310, 4303, 4390, 5707, 8606, 11414, 21515, 28535, 43030, 57070, 145309, 290618, 726545, 1453090, 1889017, 3778034, 9445085, 18890170]

約数ペア:

[(1, 18890170), (2, 9445085), (5, 3778034), (10, 1889017), (13, 1453090), (26, 726545), (65, 290618), (130, 145309), (331, 57070), (439, 43030), (662, 28535), (878, 21515), (1655, 11414), (2195, 8606), (3310, 5707), (4303, 4390)]