28198840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{22741}}^1$

素因数の和:22783

約数の個数: 32

約数和(自身を含む): 65496960

約数和(自身を除く): 37298120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 22741, 45482, 90964, 113705, 181928, 227410, 454820, 704971, 909640, 1409942, 2819884, 3524855, 5639768, 7049710, 14099420, 28198840]

約数ペア:

[(1, 28198840), (2, 14099420), (4, 7049710), (5, 5639768), (8, 3524855), (10, 2819884), (20, 1409942), (31, 909640), (40, 704971), (62, 454820), (124, 227410), (155, 181928), (248, 113705), (310, 90964), (620, 45482), (1240, 22741)]