21860125

素因数分解:

$5^3\times 7^2\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:155

約数の個数: 48

約数和(自身を含む): 32864832

約数和(自身を除く): 11004707

約数列:

[1, 5, 7, 25, 35, 43, 49, 83, 125, 175, 215, 245, 301, 415, 581, 875, 1075, 1225, 1505, 2075, 2107, 2905, 3569, 4067, 5375, 6125, 7525, 10375, 10535, 14525, 17845, 20335, 24983, 37625, 52675, 72625, 89225, 101675, 124915, 174881, 263375, 446125, 508375, 624575, 874405, 3122875, 4372025, 21860125]

約数ペア:

[(1, 21860125), (5, 4372025), (7, 3122875), (25, 874405), (35, 624575), (43, 508375), (49, 446125), (83, 263375), (125, 174881), (175, 124915), (215, 101675), (245, 89225), (301, 72625), (415, 52675), (581, 37625), (875, 24983), (1075, 20335), (1225, 17845), (1505, 14525), (2075, 10535), (2107, 10375), (2905, 7525), (3569, 6125), (4067, 5375)]