19640800

素因数分解:

$2^5\times 5^2\times {\mathrm{24551}}^1$

素因数の和:24571

約数の個数: 36

約数和(自身を含む): 47950056

約数和(自身を除く): 28309256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 24551, 49102, 98204, 122755, 196408, 245510, 392816, 491020, 613775, 785632, 982040, 1227550, 1964080, 2455100, 3928160, 4910200, 9820400, 19640800]

約数ペア:

[(1, 19640800), (2, 9820400), (4, 4910200), (5, 3928160), (8, 2455100), (10, 1964080), (16, 1227550), (20, 982040), (25, 785632), (32, 613775), (40, 491020), (50, 392816), (80, 245510), (100, 196408), (160, 122755), (200, 98204), (400, 49102), (800, 24551)]