28420815

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{349}}^1$

素因数の和:507

約数の個数: 32

約数和(自身を含む): 46872000

約数和(自身を除く): 18451185

約数列:

[1, 3, 5, 15, 61, 89, 183, 267, 305, 349, 445, 915, 1047, 1335, 1745, 5235, 5429, 16287, 21289, 27145, 31061, 63867, 81435, 93183, 106445, 155305, 319335, 465915, 1894721, 5684163, 9473605, 28420815]

約数ペア:

[(1, 28420815), (3, 9473605), (5, 5684163), (15, 1894721), (61, 465915), (89, 319335), (183, 155305), (267, 106445), (305, 93183), (349, 81435), (445, 63867), (915, 31061), (1047, 27145), (1335, 21289), (1745, 16287), (5235, 5429)]