81894800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{15749}}^1$

素因数の和:15780

約数の個数: 60

約数和(自身を含む): 211900500

約数和(自身を除く): 130005700

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 5200, 15749, 31498, 62996, 78745, 125992, 157490, 204737, 251984, 314980, 393725, 409474, 629960, 787450, 818948, 1023685, 1259920, 1574900, 1637896, 2047370, 3149800, 3275792, 4094740, 5118425, 6299600, 8189480, 10236850, 16378960, 20473700, 40947400, 81894800]

約数ペア:

[(1, 81894800), (2, 40947400), (4, 20473700), (5, 16378960), (8, 10236850), (10, 8189480), (13, 6299600), (16, 5118425), (20, 4094740), (25, 3275792), (26, 3149800), (40, 2047370), (50, 1637896), (52, 1574900), (65, 1259920), (80, 1023685), (100, 818948), (104, 787450), (130, 629960), (200, 409474), (208, 393725), (260, 314980), (325, 251984), (400, 204737), (520, 157490), (650, 125992), (1040, 78745), (1300, 62996), (2600, 31498), (5200, 15749)]