20121485345

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{204601}}^1$

素因数の和:204725

約数の個数: 32

約数和(自身を含む): 27842240160

約数和(自身を除く): 7720754815

約数列:

[1, 5, 13, 17, 65, 85, 89, 221, 445, 1105, 1157, 1513, 5785, 7565, 19669, 98345, 204601, 1023005, 2659813, 3478217, 13299065, 17391085, 18209489, 45216821, 91047445, 226084105, 236723357, 309561313, 1183616785, 1547806565, 4024297069, 20121485345]

約数ペア:

[(1, 20121485345), (5, 4024297069), (13, 1547806565), (17, 1183616785), (65, 309561313), (85, 236723357), (89, 226084105), (221, 91047445), (445, 45216821), (1105, 18209489), (1157, 17391085), (1513, 13299065), (5785, 3478217), (7565, 2659813), (19669, 1023005), (98345, 204601)]