20521328

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{941}}^1$

素因数の和:1025

約数の個数: 40

約数和(自身を含む): 42050880

約数和(自身を除く): 21529552

約数列:

[1, 2, 4, 8, 16, 29, 47, 58, 94, 116, 188, 232, 376, 464, 752, 941, 1363, 1882, 2726, 3764, 5452, 7528, 10904, 15056, 21808, 27289, 44227, 54578, 88454, 109156, 176908, 218312, 353816, 436624, 707632, 1282583, 2565166, 5130332, 10260664, 20521328]

約数ペア:

[(1, 20521328), (2, 10260664), (4, 5130332), (8, 2565166), (16, 1282583), (29, 707632), (47, 436624), (58, 353816), (94, 218312), (116, 176908), (188, 109156), (232, 88454), (376, 54578), (464, 44227), (752, 27289), (941, 21808), (1363, 15056), (1882, 10904), (2726, 7528), (3764, 5452)]