20954804

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{1487}}^1$

素因数の和:1775

約数の個数: 24

約数和(自身を含む): 39664128

約数和(自身を除く): 18709324

約数列:

[1, 2, 4, 13, 26, 52, 271, 542, 1084, 1487, 2974, 3523, 5948, 7046, 14092, 19331, 38662, 77324, 402977, 805954, 1611908, 5238701, 10477402, 20954804]

約数ペア:

[(1, 20954804), (2, 10477402), (4, 5238701), (13, 1611908), (26, 805954), (52, 402977), (271, 77324), (542, 38662), (1084, 19331), (1487, 14092), (2974, 7046), (3523, 5948)]