49664225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 71714160

約数和(自身を除く): 22049935

約数列:

[1, 5, 13, 17, 25, 65, 85, 89, 101, 221, 325, 425, 445, 505, 1105, 1157, 1313, 1513, 1717, 2225, 2525, 5525, 5785, 6565, 7565, 8585, 8989, 19669, 22321, 28925, 32825, 37825, 42925, 44945, 98345, 111605, 116857, 152813, 224725, 491725, 558025, 584285, 764065, 1986569, 2921425, 3820325, 9932845, 49664225]

約数ペア:

[(1, 49664225), (5, 9932845), (13, 3820325), (17, 2921425), (25, 1986569), (65, 764065), (85, 584285), (89, 558025), (101, 491725), (221, 224725), (325, 152813), (425, 116857), (445, 111605), (505, 98345), (1105, 44945), (1157, 42925), (1313, 37825), (1513, 32825), (1717, 28925), (2225, 22321), (2525, 19669), (5525, 8989), (5785, 8585), (6565, 7565)]