21397554

素因数分解:

$2^1\times 3^3\times {\mathrm{71}}^1\times {\mathrm{5581}}^1$

素因数の和:5663

約数の個数: 32

約数和(自身を含む): 48228480

約数和(自身を除く): 26830926

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 71, 142, 213, 426, 639, 1278, 1917, 3834, 5581, 11162, 16743, 33486, 50229, 100458, 150687, 301374, 396251, 792502, 1188753, 2377506, 3566259, 7132518, 10698777, 21397554]

約数ペア:

[(1, 21397554), (2, 10698777), (3, 7132518), (6, 3566259), (9, 2377506), (18, 1188753), (27, 792502), (54, 396251), (71, 301374), (142, 150687), (213, 100458), (426, 50229), (639, 33486), (1278, 16743), (1917, 11162), (3834, 5581)]