215725835

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{991}}^1$

素因数の和:1223

約数の個数: 32

約数和(自身を含む): 296980992

約数和(自身を除く): 81255157

約数列:

[1, 5, 13, 17, 65, 85, 197, 221, 985, 991, 1105, 2561, 3349, 4955, 12805, 12883, 16745, 16847, 43537, 64415, 84235, 195227, 217685, 219011, 976135, 1095055, 2537951, 3318859, 12689755, 16594295, 43145167, 215725835]

約数ペア:

[(1, 215725835), (5, 43145167), (13, 16594295), (17, 12689755), (65, 3318859), (85, 2537951), (197, 1095055), (221, 976135), (985, 219011), (991, 217685), (1105, 195227), (2561, 84235), (3349, 64415), (4955, 43537), (12805, 16847), (12883, 16745)]