21456390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{293}}^1\times {\mathrm{2441}}^1$

素因数の和:2744

約数の個数: 32

約数和(自身を含む): 51692256

約数和(自身を除く): 30235866

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 293, 586, 879, 1465, 1758, 2441, 2930, 4395, 4882, 7323, 8790, 12205, 14646, 24410, 36615, 73230, 715213, 1430426, 2145639, 3576065, 4291278, 7152130, 10728195, 21456390]

約数ペア:

[(1, 21456390), (2, 10728195), (3, 7152130), (5, 4291278), (6, 3576065), (10, 2145639), (15, 1430426), (30, 715213), (293, 73230), (586, 36615), (879, 24410), (1465, 14646), (1758, 12205), (2441, 8790), (2930, 7323), (4395, 4882)]