20212640

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18047}}^1$

素因数の和:18069

約数の個数: 48

約数和(自身を含む): 54577152

約数和(自身を除く): 34364512

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18047, 36094, 72188, 90235, 126329, 144376, 180470, 252658, 288752, 360940, 505316, 577504, 631645, 721880, 1010632, 1263290, 1443760, 2021264, 2526580, 2887520, 4042528, 5053160, 10106320, 20212640]

約数ペア:

[(1, 20212640), (2, 10106320), (4, 5053160), (5, 4042528), (7, 2887520), (8, 2526580), (10, 2021264), (14, 1443760), (16, 1263290), (20, 1010632), (28, 721880), (32, 631645), (35, 577504), (40, 505316), (56, 360940), (70, 288752), (80, 252658), (112, 180470), (140, 144376), (160, 126329), (224, 90235), (280, 72188), (560, 36094), (1120, 18047)]