18909280

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9091}}^1$

素因数の和:9119

約数の個数: 48

約数和(自身を含む): 48114864

約数和(自身を除く): 29205584

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9091, 18182, 36364, 45455, 72728, 90910, 118183, 145456, 181820, 236366, 290912, 363640, 472732, 590915, 727280, 945464, 1181830, 1454560, 1890928, 2363660, 3781856, 4727320, 9454640, 18909280]

約数ペア:

[(1, 18909280), (2, 9454640), (4, 4727320), (5, 3781856), (8, 2363660), (10, 1890928), (13, 1454560), (16, 1181830), (20, 945464), (26, 727280), (32, 590915), (40, 472732), (52, 363640), (65, 290912), (80, 236366), (104, 181820), (130, 145456), (160, 118183), (208, 90910), (260, 72728), (416, 45455), (520, 36364), (1040, 18182), (2080, 9091)]