19545040

素因数分解:

$2^4\times 5^1\times {\mathrm{244313}}^1$

素因数の和:244326

約数の個数: 20

約数和(自身を含む): 45442404

約数和(自身を除く): 25897364

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 244313, 488626, 977252, 1221565, 1954504, 2443130, 3909008, 4886260, 9772520, 19545040]

約数ペア:

[(1, 19545040), (2, 9772520), (4, 4886260), (5, 3909008), (8, 2443130), (10, 1954504), (16, 1221565), (20, 977252), (40, 488626), (80, 244313)]