21955347

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1543}}^1$

素因数の和:1600

約数の個数: 32

約数和(自身を含む): 35573760

約数和(自身を除く): 13618413

約数列:

[1, 3, 9, 17, 27, 31, 51, 93, 153, 279, 459, 527, 837, 1543, 1581, 4629, 4743, 13887, 14229, 26231, 41661, 47833, 78693, 143499, 236079, 430497, 708237, 813161, 1291491, 2439483, 7318449, 21955347]

約数ペア:

[(1, 21955347), (3, 7318449), (9, 2439483), (17, 1291491), (27, 813161), (31, 708237), (51, 430497), (93, 236079), (153, 143499), (279, 78693), (459, 47833), (527, 41661), (837, 26231), (1543, 14229), (1581, 13887), (4629, 4743)]