21802760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77867}}^1$

素因数の和:77885

約数の個数: 32

約数和(自身を含む): 56064960

約数和(自身を除く): 34262200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77867, 155734, 311468, 389335, 545069, 622936, 778670, 1090138, 1557340, 2180276, 2725345, 3114680, 4360552, 5450690, 10901380, 21802760]

約数ペア:

[(1, 21802760), (2, 10901380), (4, 5450690), (5, 4360552), (7, 3114680), (8, 2725345), (10, 2180276), (14, 1557340), (20, 1090138), (28, 778670), (35, 622936), (40, 545069), (56, 389335), (70, 311468), (140, 155734), (280, 77867)]