21293205

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{74713}}^1$

素因数の和:74740

約数の個数: 16

約数和(自身を含む): 35862720

約数和(自身を除く): 14569515

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 74713, 224139, 373565, 1120695, 1419547, 4258641, 7097735, 21293205]

約数ペア:

[(1, 21293205), (3, 7097735), (5, 4258641), (15, 1419547), (19, 1120695), (57, 373565), (95, 224139), (285, 74713)]