21805810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{2843}}^1$

素因数の和:2922

約数の個数: 32

約数和(自身を含む): 43001280

約数和(自身を除く): 21195470

約数列:

[1, 2, 5, 10, 13, 26, 59, 65, 118, 130, 295, 590, 767, 1534, 2843, 3835, 5686, 7670, 14215, 28430, 36959, 73918, 167737, 184795, 335474, 369590, 838685, 1677370, 2180581, 4361162, 10902905, 21805810]

約数ペア:

[(1, 21805810), (2, 10902905), (5, 4361162), (10, 2180581), (13, 1677370), (26, 838685), (59, 369590), (65, 335474), (118, 184795), (130, 167737), (295, 73918), (590, 36959), (767, 28430), (1534, 14215), (2843, 7670), (3835, 5686)]