20200325

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^2$

素因数の和:138

約数の個数: 36

約数和(自身を含む): 28167840

約数和(自身を除く): 7967515

約数列:

[1, 5, 19, 23, 25, 43, 95, 115, 215, 437, 475, 575, 817, 989, 1075, 1849, 2185, 4085, 4945, 9245, 10925, 18791, 20425, 24725, 35131, 42527, 46225, 93955, 175655, 212635, 469775, 808013, 878275, 1063175, 4040065, 20200325]

約数ペア:

[(1, 20200325), (5, 4040065), (19, 1063175), (23, 878275), (25, 808013), (43, 469775), (95, 212635), (115, 175655), (215, 93955), (437, 46225), (475, 42527), (575, 35131), (817, 24725), (989, 20425), (1075, 18791), (1849, 10925), (2185, 9245), (4085, 4945)]