21724340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{191}}^1$

素因数の和:269

約数の個数: 72

約数和(自身を含む): 51480576

約数和(自身を除く): 29756236

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 47, 55, 94, 110, 121, 188, 191, 220, 235, 242, 382, 470, 484, 517, 605, 764, 940, 955, 1034, 1210, 1910, 2068, 2101, 2420, 2585, 3820, 4202, 5170, 5687, 8404, 8977, 10340, 10505, 11374, 17954, 21010, 22748, 23111, 28435, 35908, 42020, 44885, 46222, 56870, 89770, 92444, 98747, 113740, 115555, 179540, 197494, 231110, 394988, 462220, 493735, 987470, 1086217, 1974940, 2172434, 4344868, 5431085, 10862170, 21724340]

約数ペア:

[(1, 21724340), (2, 10862170), (4, 5431085), (5, 4344868), (10, 2172434), (11, 1974940), (20, 1086217), (22, 987470), (44, 493735), (47, 462220), (55, 394988), (94, 231110), (110, 197494), (121, 179540), (188, 115555), (191, 113740), (220, 98747), (235, 92444), (242, 89770), (382, 56870), (470, 46222), (484, 44885), (517, 42020), (605, 35908), (764, 28435), (940, 23111), (955, 22748), (1034, 21010), (1210, 17954), (1910, 11374), (2068, 10505), (2101, 10340), (2420, 8977), (2585, 8404), (3820, 5687), (4202, 5170)]