21199816

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{383}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 26078264

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 37, 44, 68, 74, 88, 136, 148, 187, 296, 374, 383, 407, 629, 748, 766, 814, 1258, 1496, 1532, 1628, 2516, 3064, 3256, 4213, 5032, 6511, 6919, 8426, 13022, 13838, 14171, 16852, 26044, 27676, 28342, 33704, 52088, 55352, 56684, 71621, 113368, 143242, 155881, 240907, 286484, 311762, 481814, 572968, 623524, 963628, 1247048, 1927256, 2649977, 5299954, 10599908, 21199816]

約数ペア:

[(1, 21199816), (2, 10599908), (4, 5299954), (8, 2649977), (11, 1927256), (17, 1247048), (22, 963628), (34, 623524), (37, 572968), (44, 481814), (68, 311762), (74, 286484), (88, 240907), (136, 155881), (148, 143242), (187, 113368), (296, 71621), (374, 56684), (383, 55352), (407, 52088), (629, 33704), (748, 28342), (766, 27676), (814, 26044), (1258, 16852), (1496, 14171), (1532, 13838), (1628, 13022), (2516, 8426), (3064, 6919), (3256, 6511), (4213, 5032)]