28782820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{3191}}^1$

素因数の和:3252

約数の個数: 48

約数和(自身を含む): 67568256

約数和(自身を除く): 38785436

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2255, 3191, 4510, 6382, 9020, 12764, 15955, 31910, 35101, 63820, 70202, 130831, 140404, 175505, 261662, 351010, 523324, 654155, 702020, 1308310, 1439141, 2616620, 2878282, 5756564, 7195705, 14391410, 28782820]

約数ペア:

[(1, 28782820), (2, 14391410), (4, 7195705), (5, 5756564), (10, 2878282), (11, 2616620), (20, 1439141), (22, 1308310), (41, 702020), (44, 654155), (55, 523324), (82, 351010), (110, 261662), (164, 175505), (205, 140404), (220, 130831), (410, 70202), (451, 63820), (820, 35101), (902, 31910), (1804, 15955), (2255, 12764), (3191, 9020), (4510, 6382)]