15971991

素因数分解:

$3^1\times 7^2\times {\mathrm{179}}^1\times {\mathrm{607}}^1$

素因数の和:803

約数の個数: 24

約数和(自身を含む): 24952320

約数和(自身を除く): 8980329

約数列:

[1, 3, 7, 21, 49, 147, 179, 537, 607, 1253, 1821, 3759, 4249, 8771, 12747, 26313, 29743, 89229, 108653, 325959, 760571, 2281713, 5323997, 15971991]

約数ペア:

[(1, 15971991), (3, 5323997), (7, 2281713), (21, 760571), (49, 325959), (147, 108653), (179, 89229), (537, 29743), (607, 26313), (1253, 12747), (1821, 8771), (3759, 4249)]