19804510

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 41057280

約数和(自身を除く): 21252770

約数列:

[1, 2, 5, 10, 11, 22, 43, 53, 55, 79, 86, 106, 110, 158, 215, 265, 395, 430, 473, 530, 583, 790, 869, 946, 1166, 1738, 2279, 2365, 2915, 3397, 4187, 4345, 4558, 4730, 5830, 6794, 8374, 8690, 11395, 16985, 20935, 22790, 25069, 33970, 37367, 41870, 46057, 50138, 74734, 92114, 125345, 180041, 186835, 230285, 250690, 360082, 373670, 460570, 900205, 1800410, 1980451, 3960902, 9902255, 19804510]

約数ペア:

[(1, 19804510), (2, 9902255), (5, 3960902), (10, 1980451), (11, 1800410), (22, 900205), (43, 460570), (53, 373670), (55, 360082), (79, 250690), (86, 230285), (106, 186835), (110, 180041), (158, 125345), (215, 92114), (265, 74734), (395, 50138), (430, 46057), (473, 41870), (530, 37367), (583, 33970), (790, 25069), (869, 22790), (946, 20935), (1166, 16985), (1738, 11395), (2279, 8690), (2365, 8374), (2915, 6794), (3397, 5830), (4187, 4730), (4345, 4558)]