2818640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{3203}}^1$

素因数の和:3227

約数の個数: 40

約数和(自身を含む): 7151328

約数和(自身を除く): 4332688

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 3203, 6406, 12812, 16015, 25624, 32030, 35233, 51248, 64060, 70466, 128120, 140932, 176165, 256240, 281864, 352330, 563728, 704660, 1409320, 2818640]

約数ペア:

[(1, 2818640), (2, 1409320), (4, 704660), (5, 563728), (8, 352330), (10, 281864), (11, 256240), (16, 176165), (20, 140932), (22, 128120), (40, 70466), (44, 64060), (55, 51248), (80, 35233), (88, 32030), (110, 25624), (176, 16015), (220, 12812), (440, 6406), (880, 3203)]