2019781000

素因数分解:

$2^3\times 5^3\times {\mathrm{1129}}^1\times {\mathrm{1789}}^1$

素因数の和:2939

約数の個数: 64

約数和(自身を含む): 4733118000

約数和(自身を除く): 2713337000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 1129, 1789, 2258, 3578, 4516, 5645, 7156, 8945, 9032, 11290, 14312, 17890, 22580, 28225, 35780, 44725, 45160, 56450, 71560, 89450, 112900, 141125, 178900, 223625, 225800, 282250, 357800, 447250, 564500, 894500, 1129000, 1789000, 2019781, 4039562, 8079124, 10098905, 16158248, 20197810, 40395620, 50494525, 80791240, 100989050, 201978100, 252472625, 403956200, 504945250, 1009890500, 2019781000]

約数ペア:

[(1, 2019781000), (2, 1009890500), (4, 504945250), (5, 403956200), (8, 252472625), (10, 201978100), (20, 100989050), (25, 80791240), (40, 50494525), (50, 40395620), (100, 20197810), (125, 16158248), (200, 10098905), (250, 8079124), (500, 4039562), (1000, 2019781), (1129, 1789000), (1789, 1129000), (2258, 894500), (3578, 564500), (4516, 447250), (5645, 357800), (7156, 282250), (8945, 225800), (9032, 223625), (11290, 178900), (14312, 141125), (17890, 112900), (22580, 89450), (28225, 71560), (35780, 56450), (44725, 45160)]