21012780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{350213}}^1$

素因数の和:350225

約数の個数: 24

約数和(自身を含む): 58835952

約数和(自身を除く): 37823172

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 350213, 700426, 1050639, 1400852, 1751065, 2101278, 3502130, 4202556, 5253195, 7004260, 10506390, 21012780]

約数ペア:

[(1, 21012780), (2, 10506390), (3, 7004260), (4, 5253195), (5, 4202556), (6, 3502130), (10, 2101278), (12, 1751065), (15, 1400852), (20, 1050639), (30, 700426), (60, 350213)]