21919900

素因数分解:

$2^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{2011}}^1$

素因数の和:2134

約数の個数: 36

約数和(自身を含む): 48026440

約数和(自身を除く): 26106540

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 109, 218, 436, 545, 1090, 2011, 2180, 2725, 4022, 5450, 8044, 10055, 10900, 20110, 40220, 50275, 100550, 201100, 219199, 438398, 876796, 1095995, 2191990, 4383980, 5479975, 10959950, 21919900]

約数ペア:

[(1, 21919900), (2, 10959950), (4, 5479975), (5, 4383980), (10, 2191990), (20, 1095995), (25, 876796), (50, 438398), (100, 219199), (109, 201100), (218, 100550), (436, 50275), (545, 40220), (1090, 20110), (2011, 10900), (2180, 10055), (2725, 8044), (4022, 5450)]