20729325

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 36533376

約数和(自身を除く): 15804051

約数列:

[1, 3, 5, 15, 23, 25, 61, 69, 75, 115, 183, 197, 305, 345, 575, 591, 915, 985, 1403, 1525, 1725, 2955, 4209, 4531, 4575, 4925, 7015, 12017, 13593, 14775, 21045, 22655, 35075, 36051, 60085, 67965, 105225, 113275, 180255, 276391, 300425, 339825, 829173, 901275, 1381955, 4145865, 6909775, 20729325]

約数ペア:

[(1, 20729325), (3, 6909775), (5, 4145865), (15, 1381955), (23, 901275), (25, 829173), (61, 339825), (69, 300425), (75, 276391), (115, 180255), (183, 113275), (197, 105225), (305, 67965), (345, 60085), (575, 36051), (591, 35075), (915, 22655), (985, 21045), (1403, 14775), (1525, 13593), (1725, 12017), (2955, 7015), (4209, 4925), (4531, 4575)]