21546513

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{433}}^1$

素因数の和:558

約数の個数: 32

約数和(自身を含む): 34025600

約数和(自身を除く): 12479087

約数列:

[1, 3, 9, 19, 27, 57, 97, 171, 291, 433, 513, 873, 1299, 1843, 2619, 3897, 5529, 8227, 11691, 16587, 24681, 42001, 49761, 74043, 126003, 222129, 378009, 798019, 1134027, 2394057, 7182171, 21546513]

約数ペア:

[(1, 21546513), (3, 7182171), (9, 2394057), (19, 1134027), (27, 798019), (57, 378009), (97, 222129), (171, 126003), (291, 74043), (433, 49761), (513, 42001), (873, 24681), (1299, 16587), (1843, 11691), (2619, 8227), (3897, 5529)]