21034780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4759}}^1$

素因数の和:4798

約数の個数: 48

約数和(自身を含む): 50379840

約数和(自身を除く): 29345060

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 4759, 9518, 19036, 23795, 47590, 61867, 80903, 95180, 123734, 161806, 247468, 309335, 323612, 404515, 618670, 809030, 1051739, 1237340, 1618060, 2103478, 4206956, 5258695, 10517390, 21034780]

約数ペア:

[(1, 21034780), (2, 10517390), (4, 5258695), (5, 4206956), (10, 2103478), (13, 1618060), (17, 1237340), (20, 1051739), (26, 809030), (34, 618670), (52, 404515), (65, 323612), (68, 309335), (85, 247468), (130, 161806), (170, 123734), (221, 95180), (260, 80903), (340, 61867), (442, 47590), (884, 23795), (1105, 19036), (2210, 9518), (4420, 4759)]