19799560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2647}}^1$

素因数の和:2686

約数の個数: 64

約数和(自身を含む): 51477120

約数和(自身を除く): 31677560

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, 2647, 3740, 5294, 7480, 10588, 13235, 21176, 26470, 29117, 44999, 52940, 58234, 89998, 105880, 116468, 145585, 179996, 224995, 232936, 291170, 359992, 449990, 494989, 582340, 899980, 989978, 1164680, 1799960, 1979956, 2474945, 3959912, 4949890, 9899780, 19799560]

約数ペア:

[(1, 19799560), (2, 9899780), (4, 4949890), (5, 3959912), (8, 2474945), (10, 1979956), (11, 1799960), (17, 1164680), (20, 989978), (22, 899980), (34, 582340), (40, 494989), (44, 449990), (55, 359992), (68, 291170), (85, 232936), (88, 224995), (110, 179996), (136, 145585), (170, 116468), (187, 105880), (220, 89998), (340, 58234), (374, 52940), (440, 44999), (680, 29117), (748, 26470), (935, 21176), (1496, 13235), (1870, 10588), (2647, 7480), (3740, 5294)]