251221295

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{853}}^1$

素因数の和:1091

約数の個数: 32

約数和(自身を含む): 340889472

約数和(自身を除く): 89668177

約数列:

[1, 5, 13, 23, 65, 115, 197, 299, 853, 985, 1495, 2561, 4265, 4531, 11089, 12805, 19619, 22655, 55445, 58903, 98095, 168041, 255047, 294515, 840205, 1275235, 2184533, 3864943, 10922665, 19324715, 50244259, 251221295]

約数ペア:

[(1, 251221295), (5, 50244259), (13, 19324715), (23, 10922665), (65, 3864943), (115, 2184533), (197, 1275235), (299, 840205), (853, 294515), (985, 255047), (1495, 168041), (2561, 98095), (4265, 58903), (4531, 55445), (11089, 22655), (12805, 19619)]