21247431

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{4861}}^1$

素因数の和:4942

約数の個数: 16

約数和(自身を含む): 29872128

約数和(自身を除く): 8624697

約数列:

[1, 3, 31, 47, 93, 141, 1457, 4371, 4861, 14583, 150691, 228467, 452073, 685401, 7082477, 21247431]

約数ペア:

[(1, 21247431), (3, 7082477), (31, 685401), (47, 452073), (93, 228467), (141, 150691), (1457, 14583), (4371, 4861)]