20519200

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{1973}}^1$

素因数の和:2006

約数の個数: 72

約数和(自身を含む): 53973108

約数和(自身を除く): 33453908

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 65, 80, 100, 104, 130, 160, 200, 208, 260, 325, 400, 416, 520, 650, 800, 1040, 1300, 1973, 2080, 2600, 3946, 5200, 7892, 9865, 10400, 15784, 19730, 25649, 31568, 39460, 49325, 51298, 63136, 78920, 98650, 102596, 128245, 157840, 197300, 205192, 256490, 315680, 394600, 410384, 512980, 641225, 789200, 820768, 1025960, 1282450, 1578400, 2051920, 2564900, 4103840, 5129800, 10259600, 20519200]

約数ペア:

[(1, 20519200), (2, 10259600), (4, 5129800), (5, 4103840), (8, 2564900), (10, 2051920), (13, 1578400), (16, 1282450), (20, 1025960), (25, 820768), (26, 789200), (32, 641225), (40, 512980), (50, 410384), (52, 394600), (65, 315680), (80, 256490), (100, 205192), (104, 197300), (130, 157840), (160, 128245), (200, 102596), (208, 98650), (260, 78920), (325, 63136), (400, 51298), (416, 49325), (520, 39460), (650, 31568), (800, 25649), (1040, 19730), (1300, 15784), (1973, 10400), (2080, 9865), (2600, 7892), (3946, 5200)]