21105993

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{421}}^1\times {\mathrm{983}}^1$

素因数の和:1424

約数の個数: 16

約数和(自身を含む): 29897856

約数和(自身を除く): 8791863

約数列:

[1, 3, 17, 51, 421, 983, 1263, 2949, 7157, 16711, 21471, 50133, 413843, 1241529, 7035331, 21105993]

約数ペア:

[(1, 21105993), (3, 7035331), (17, 1241529), (51, 413843), (421, 50133), (983, 21471), (1263, 16711), (2949, 7157)]