81430180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10103}}^1$

素因数の和:10156

約数の個数: 48

約数和(自身を含む): 190116864

約数和(自身を除く): 108686684

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 10103, 20206, 40412, 50515, 101030, 131339, 202060, 262678, 313193, 525356, 626386, 656695, 1252772, 1313390, 1565965, 2626780, 3131930, 4071509, 6263860, 8143018, 16286036, 20357545, 40715090, 81430180]

約数ペア:

[(1, 81430180), (2, 40715090), (4, 20357545), (5, 16286036), (10, 8143018), (13, 6263860), (20, 4071509), (26, 3131930), (31, 2626780), (52, 1565965), (62, 1313390), (65, 1252772), (124, 656695), (130, 626386), (155, 525356), (260, 313193), (310, 262678), (403, 202060), (620, 131339), (806, 101030), (1612, 50515), (2015, 40412), (4030, 20206), (8060, 10103)]