21007371

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{431}}^1$

素因数の和:663

約数の個数: 32

約数和(自身を含む): 35168256

約数和(自身を除く): 14160885

約数列:

[1, 3, 7, 11, 21, 33, 77, 211, 231, 431, 633, 1293, 1477, 2321, 3017, 4431, 4741, 6963, 9051, 14223, 16247, 33187, 48741, 90941, 99561, 272823, 636587, 1000351, 1909761, 3001053, 7002457, 21007371]

約数ペア:

[(1, 21007371), (3, 7002457), (7, 3001053), (11, 1909761), (21, 1000351), (33, 636587), (77, 272823), (211, 99561), (231, 90941), (431, 48741), (633, 33187), (1293, 16247), (1477, 14223), (2321, 9051), (3017, 6963), (4431, 4741)]