20191520

素因数分解:

$2^5\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1301}}^1$

素因数の和:1413

約数の個数: 48

約数和(自身を含む): 48231288

約数和(自身を除く): 28039768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 97, 160, 194, 388, 485, 776, 970, 1301, 1552, 1940, 2602, 3104, 3880, 5204, 6505, 7760, 10408, 13010, 15520, 20816, 26020, 41632, 52040, 104080, 126197, 208160, 252394, 504788, 630985, 1009576, 1261970, 2019152, 2523940, 4038304, 5047880, 10095760, 20191520]

約数ペア:

[(1, 20191520), (2, 10095760), (4, 5047880), (5, 4038304), (8, 2523940), (10, 2019152), (16, 1261970), (20, 1009576), (32, 630985), (40, 504788), (80, 252394), (97, 208160), (160, 126197), (194, 104080), (388, 52040), (485, 41632), (776, 26020), (970, 20816), (1301, 15520), (1552, 13010), (1940, 10408), (2602, 7760), (3104, 6505), (3880, 5204)]