16520325

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 29152896

約数和(自身を除く): 12632571

約数列:

[1, 3, 5, 15, 23, 25, 61, 69, 75, 115, 157, 183, 305, 345, 471, 575, 785, 915, 1403, 1525, 1725, 2355, 3611, 3925, 4209, 4575, 7015, 9577, 10833, 11775, 18055, 21045, 28731, 35075, 47885, 54165, 90275, 105225, 143655, 220271, 239425, 270825, 660813, 718275, 1101355, 3304065, 5506775, 16520325]

約数ペア:

[(1, 16520325), (3, 5506775), (5, 3304065), (15, 1101355), (23, 718275), (25, 660813), (61, 270825), (69, 239425), (75, 220271), (115, 143655), (157, 105225), (183, 90275), (305, 54165), (345, 47885), (471, 35075), (575, 28731), (785, 21045), (915, 18055), (1403, 11775), (1525, 10833), (1725, 9577), (2355, 7015), (3611, 4575), (3925, 4209)]