19047220

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{881}}^1$

素因数の和:960

約数の個数: 48

約数和(自身を含む): 42674688

約数和(自身を除く): 23627468

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 47, 92, 94, 115, 188, 230, 235, 460, 470, 881, 940, 1081, 1762, 2162, 3524, 4324, 4405, 5405, 8810, 10810, 17620, 20263, 21620, 40526, 41407, 81052, 82814, 101315, 165628, 202630, 207035, 405260, 414070, 828140, 952361, 1904722, 3809444, 4761805, 9523610, 19047220]

約数ペア:

[(1, 19047220), (2, 9523610), (4, 4761805), (5, 3809444), (10, 1904722), (20, 952361), (23, 828140), (46, 414070), (47, 405260), (92, 207035), (94, 202630), (115, 165628), (188, 101315), (230, 82814), (235, 81052), (460, 41407), (470, 40526), (881, 21620), (940, 20263), (1081, 17620), (1762, 10810), (2162, 8810), (3524, 5405), (4324, 4405)]