51123320

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{7841}}^1$

素因数の和:8015

約数の個数: 32

約数和(自身を含む): 115747920

約数和(自身を除く): 64624600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 7841, 15682, 31364, 39205, 62728, 78410, 156820, 313640, 1278083, 2556166, 5112332, 6390415, 10224664, 12780830, 25561660, 51123320]

約数ペア:

[(1, 51123320), (2, 25561660), (4, 12780830), (5, 10224664), (8, 6390415), (10, 5112332), (20, 2556166), (40, 1278083), (163, 313640), (326, 156820), (652, 78410), (815, 62728), (1304, 39205), (1630, 31364), (3260, 15682), (6520, 7841)]