19916180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3083}}^1$

素因数の和:3128

約数の個数: 48

約数和(自身を含む): 46630080

約数和(自身を除く): 26713900

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 3083, 3230, 6166, 6460, 12332, 15415, 30830, 52411, 58577, 61660, 104822, 117154, 209644, 234308, 262055, 292885, 524110, 585770, 995809, 1048220, 1171540, 1991618, 3983236, 4979045, 9958090, 19916180]

約数ペア:

[(1, 19916180), (2, 9958090), (4, 4979045), (5, 3983236), (10, 1991618), (17, 1171540), (19, 1048220), (20, 995809), (34, 585770), (38, 524110), (68, 292885), (76, 262055), (85, 234308), (95, 209644), (170, 117154), (190, 104822), (323, 61660), (340, 58577), (380, 52411), (646, 30830), (1292, 15415), (1615, 12332), (3083, 6460), (3230, 6166)]