21005860

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{36217}}^1$

素因数の和:36255

約数の個数: 24

約数和(自身を含む): 45634680

約数和(自身を除く): 24628820

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 36217, 72434, 144868, 181085, 362170, 724340, 1050293, 2100586, 4201172, 5251465, 10502930, 21005860]

約数ペア:

[(1, 21005860), (2, 10502930), (4, 5251465), (5, 4201172), (10, 2100586), (20, 1050293), (29, 724340), (58, 362170), (116, 181085), (145, 144868), (290, 72434), (580, 36217)]