2820400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{641}}^1$

素因数の和:670

約数の個数: 60

約数和(自身を含む): 7403544

約数和(自身を除く): 4583144

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 641, 880, 1100, 1282, 2200, 2564, 3205, 4400, 5128, 6410, 7051, 10256, 12820, 14102, 16025, 25640, 28204, 32050, 35255, 51280, 56408, 64100, 70510, 112816, 128200, 141020, 176275, 256400, 282040, 352550, 564080, 705100, 1410200, 2820400]

約数ペア:

[(1, 2820400), (2, 1410200), (4, 705100), (5, 564080), (8, 352550), (10, 282040), (11, 256400), (16, 176275), (20, 141020), (22, 128200), (25, 112816), (40, 70510), (44, 64100), (50, 56408), (55, 51280), (80, 35255), (88, 32050), (100, 28204), (110, 25640), (176, 16025), (200, 14102), (220, 12820), (275, 10256), (400, 7051), (440, 6410), (550, 5128), (641, 4400), (880, 3205), (1100, 2564), (1282, 2200)]