420171020

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1\times {\mathrm{1987}}^1$

素因数の和:2202

約数の個数: 48

約数和(自身を含む): 900086880

約数和(自身を除く): 479915860

約数列:

[1, 2, 4, 5, 10, 20, 97, 109, 194, 218, 388, 436, 485, 545, 970, 1090, 1940, 1987, 2180, 3974, 7948, 9935, 10573, 19870, 21146, 39740, 42292, 52865, 105730, 192739, 211460, 216583, 385478, 433166, 770956, 866332, 963695, 1082915, 1927390, 2165830, 3854780, 4331660, 21008551, 42017102, 84034204, 105042755, 210085510, 420171020]

約数ペア:

[(1, 420171020), (2, 210085510), (4, 105042755), (5, 84034204), (10, 42017102), (20, 21008551), (97, 4331660), (109, 3854780), (194, 2165830), (218, 1927390), (388, 1082915), (436, 963695), (485, 866332), (545, 770956), (970, 433166), (1090, 385478), (1940, 216583), (1987, 211460), (2180, 192739), (3974, 105730), (7948, 52865), (9935, 42292), (10573, 39740), (19870, 21146)]