21856395

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{4273}}^1$

素因数の和:4323

約数の個数: 32

約数和(自身を含む): 39389184

約数和(自身を除く): 17532789

約数列:

[1, 3, 5, 11, 15, 31, 33, 55, 93, 155, 165, 341, 465, 1023, 1705, 4273, 5115, 12819, 21365, 47003, 64095, 132463, 141009, 235015, 397389, 662315, 705045, 1457093, 1986945, 4371279, 7285465, 21856395]

約数ペア:

[(1, 21856395), (3, 7285465), (5, 4371279), (11, 1986945), (15, 1457093), (31, 705045), (33, 662315), (55, 397389), (93, 235015), (155, 141009), (165, 132463), (341, 64095), (465, 47003), (1023, 21365), (1705, 12819), (4273, 5115)]