199912980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{20441}}^1$

素因数の和:20616

約数の個数: 48

約数和(自身を含む): 563217984

約数和(自身を除く): 363305004

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 163, 326, 489, 652, 815, 978, 1630, 1956, 2445, 3260, 4890, 9780, 20441, 40882, 61323, 81764, 102205, 122646, 204410, 245292, 306615, 408820, 613230, 1226460, 3331883, 6663766, 9995649, 13327532, 16659415, 19991298, 33318830, 39982596, 49978245, 66637660, 99956490, 199912980]

約数ペア:

[(1, 199912980), (2, 99956490), (3, 66637660), (4, 49978245), (5, 39982596), (6, 33318830), (10, 19991298), (12, 16659415), (15, 13327532), (20, 9995649), (30, 6663766), (60, 3331883), (163, 1226460), (326, 613230), (489, 408820), (652, 306615), (815, 245292), (978, 204410), (1630, 122646), (1956, 102205), (2445, 81764), (3260, 61323), (4890, 40882), (9780, 20441)]