21809810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 46189440

約数和(自身を除く): 24379630

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 107, 109, 110, 170, 187, 214, 218, 374, 535, 545, 935, 1070, 1090, 1177, 1199, 1819, 1853, 1870, 2354, 2398, 3638, 3706, 5885, 5995, 9095, 9265, 11663, 11770, 11990, 18190, 18530, 20009, 20383, 23326, 40018, 40766, 58315, 100045, 101915, 116630, 128293, 198271, 200090, 203830, 256586, 396542, 641465, 991355, 1282930, 1982710, 2180981, 4361962, 10904905, 21809810]

約数ペア:

[(1, 21809810), (2, 10904905), (5, 4361962), (10, 2180981), (11, 1982710), (17, 1282930), (22, 991355), (34, 641465), (55, 396542), (85, 256586), (107, 203830), (109, 200090), (110, 198271), (170, 128293), (187, 116630), (214, 101915), (218, 100045), (374, 58315), (535, 40766), (545, 40018), (935, 23326), (1070, 20383), (1090, 20009), (1177, 18530), (1199, 18190), (1819, 11990), (1853, 11770), (1870, 11663), (2354, 9265), (2398, 9095), (3638, 5995), (3706, 5885)]