21982041

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{331}}^1$

素因数の和:541

約数の個数: 24

約数和(自身を含む): 32732544

約数和(自身を除く): 10750503

約数列:

[1, 3, 9, 47, 141, 157, 331, 423, 471, 993, 1413, 2979, 7379, 15557, 22137, 46671, 51967, 66411, 140013, 155901, 467703, 2442449, 7327347, 21982041]

約数ペア:

[(1, 21982041), (3, 7327347), (9, 2442449), (47, 467703), (141, 155901), (157, 140013), (331, 66411), (423, 51967), (471, 46671), (993, 22137), (1413, 15557), (2979, 7379)]