20181284500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{3104813}}^1$

素因数の和:3104845

約数の個数: 48

約数和(自身を含む): 47466396432

約数和(自身を除く): 27285111932

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3250, 6500, 3104813, 6209626, 12419252, 15524065, 31048130, 40362569, 62096260, 77620325, 80725138, 155240650, 161450276, 201812845, 310481300, 388101625, 403625690, 776203250, 807251380, 1009064225, 1552406500, 2018128450, 4036256900, 5045321125, 10090642250, 20181284500]

約数ペア:

[(1, 20181284500), (2, 10090642250), (4, 5045321125), (5, 4036256900), (10, 2018128450), (13, 1552406500), (20, 1009064225), (25, 807251380), (26, 776203250), (50, 403625690), (52, 388101625), (65, 310481300), (100, 201812845), (125, 161450276), (130, 155240650), (250, 80725138), (260, 77620325), (325, 62096260), (500, 40362569), (650, 31048130), (1300, 15524065), (1625, 12419252), (3250, 6209626), (6500, 3104813)]