21821758

素因数分解:

$2^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{5431}}^1$

素因数の和:5488

約数の個数: 24

約数和(自身を含む): 39012624

約数和(自身を除く): 17190866

約数列:

[1, 2, 7, 14, 41, 49, 82, 98, 287, 574, 2009, 4018, 5431, 10862, 38017, 76034, 222671, 266119, 445342, 532238, 1558697, 3117394, 10910879, 21821758]

約数ペア:

[(1, 21821758), (2, 10910879), (7, 3117394), (14, 1558697), (41, 532238), (49, 445342), (82, 266119), (98, 222671), (287, 76034), (574, 38017), (2009, 10862), (4018, 5431)]