256327105

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{179}}^1\times {\mathrm{991}}^1$

素因数の和:1209

約数の個数: 24

約数和(自身を含む): 328907520

約数和(自身を除く): 72580415

約数列:

[1, 5, 17, 85, 179, 289, 895, 991, 1445, 3043, 4955, 15215, 16847, 51731, 84235, 177389, 258655, 286399, 886945, 1431995, 3015613, 15078065, 51265421, 256327105]

約数ペア:

[(1, 256327105), (5, 51265421), (17, 15078065), (85, 3015613), (179, 1431995), (289, 886945), (895, 286399), (991, 258655), (1445, 177389), (3043, 84235), (4955, 51731), (15215, 16847)]