20876680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2791}}^1$

素因数の和:2830

約数の個数: 64

約数和(自身を含む): 54276480

約数和(自身を除く): 33399800

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 340, 374, 440, 680, 748, 935, 1496, 1870, 2791, 3740, 5582, 7480, 11164, 13955, 22328, 27910, 30701, 47447, 55820, 61402, 94894, 111640, 122804, 153505, 189788, 237235, 245608, 307010, 379576, 474470, 521917, 614020, 948940, 1043834, 1228040, 1897880, 2087668, 2609585, 4175336, 5219170, 10438340, 20876680]

約数ペア:

[(1, 20876680), (2, 10438340), (4, 5219170), (5, 4175336), (8, 2609585), (10, 2087668), (11, 1897880), (17, 1228040), (20, 1043834), (22, 948940), (34, 614020), (40, 521917), (44, 474470), (55, 379576), (68, 307010), (85, 245608), (88, 237235), (110, 189788), (136, 153505), (170, 122804), (187, 111640), (220, 94894), (340, 61402), (374, 55820), (440, 47447), (680, 30701), (748, 27910), (935, 22328), (1496, 13955), (1870, 11164), (2791, 7480), (3740, 5582)]