21456780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{357613}}^1$

素因数の和:357625

約数の個数: 24

約数和(自身を含む): 60079152

約数和(自身を除く): 38622372

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 357613, 715226, 1072839, 1430452, 1788065, 2145678, 3576130, 4291356, 5364195, 7152260, 10728390, 21456780]

約数ペア:

[(1, 21456780), (2, 10728390), (3, 7152260), (4, 5364195), (5, 4291356), (6, 3576130), (10, 2145678), (12, 1788065), (15, 1430452), (20, 1072839), (30, 715226), (60, 357613)]