161654380

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{809}}^1$

素因数の和:1018

約数の個数: 48

約数和(自身を含む): 346731840

約数和(自身を除く): 185077460

約数列:

[1, 2, 4, 5, 10, 20, 97, 103, 194, 206, 388, 412, 485, 515, 809, 970, 1030, 1618, 1940, 2060, 3236, 4045, 8090, 9991, 16180, 19982, 39964, 49955, 78473, 83327, 99910, 156946, 166654, 199820, 313892, 333308, 392365, 416635, 784730, 833270, 1569460, 1666540, 8082719, 16165438, 32330876, 40413595, 80827190, 161654380]

約数ペア:

[(1, 161654380), (2, 80827190), (4, 40413595), (5, 32330876), (10, 16165438), (20, 8082719), (97, 1666540), (103, 1569460), (194, 833270), (206, 784730), (388, 416635), (412, 392365), (485, 333308), (515, 313892), (809, 199820), (970, 166654), (1030, 156946), (1618, 99910), (1940, 83327), (2060, 78473), (3236, 49955), (4045, 39964), (8090, 19982), (9991, 16180)]