19802240

素因数分解:

$2^7\times 5^1\times {\mathrm{30941}}^1$

素因数の和:30960

約数の個数: 32

約数和(自身を含む): 47341260

約数和(自身を除く): 27539020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 30941, 61882, 123764, 154705, 247528, 309410, 495056, 618820, 990112, 1237640, 1980224, 2475280, 3960448, 4950560, 9901120, 19802240]

約数ペア:

[(1, 19802240), (2, 9901120), (4, 4950560), (5, 3960448), (8, 2475280), (10, 1980224), (16, 1237640), (20, 990112), (32, 618820), (40, 495056), (64, 309410), (80, 247528), (128, 154705), (160, 123764), (320, 61882), (640, 30941)]