19101625

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:222

約数の個数: 32

約数和(自身を含む): 25777440

約数和(自身を除く): 6675815

約数列:

[1, 5, 17, 25, 85, 89, 101, 125, 425, 445, 505, 1513, 1717, 2125, 2225, 2525, 7565, 8585, 8989, 11125, 12625, 37825, 42925, 44945, 152813, 189125, 214625, 224725, 764065, 1123625, 3820325, 19101625]

約数ペア:

[(1, 19101625), (5, 3820325), (17, 1123625), (25, 764065), (85, 224725), (89, 214625), (101, 189125), (125, 152813), (425, 44945), (445, 42925), (505, 37825), (1513, 12625), (1717, 11125), (2125, 8989), (2225, 8585), (2525, 7565)]