21849160

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{12703}}^1$

素因数の和:12757

約数の個数: 32

約数和(自身を含む): 50307840

約数和(自身を除く): 28458680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 12703, 25406, 50812, 63515, 101624, 127030, 254060, 508120, 546229, 1092458, 2184916, 2731145, 4369832, 5462290, 10924580, 21849160]

約数ペア:

[(1, 21849160), (2, 10924580), (4, 5462290), (5, 4369832), (8, 2731145), (10, 2184916), (20, 1092458), (40, 546229), (43, 508120), (86, 254060), (172, 127030), (215, 101624), (344, 63515), (430, 50812), (860, 25406), (1720, 12703)]