9907950505

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1\times {\mathrm{811}}^1$

素因数の和:1249

約数の個数: 32

約数和(自身を含む): 12193251840

約数和(自身を除く): 2285301335

約数列:

[1, 5, 79, 157, 197, 395, 785, 811, 985, 4055, 12403, 15563, 30929, 62015, 64069, 77815, 127327, 154645, 159767, 320345, 636635, 798835, 2443391, 10058833, 12216955, 12621593, 25083419, 50294165, 63107965, 125417095, 1981590101, 9907950505]

約数ペア:

[(1, 9907950505), (5, 1981590101), (79, 125417095), (157, 63107965), (197, 50294165), (395, 25083419), (785, 12621593), (811, 12216955), (985, 10058833), (4055, 2443391), (12403, 798835), (15563, 636635), (30929, 320345), (62015, 159767), (64069, 154645), (77815, 127327)]