19081720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2963}}^1$

素因数の和:3004

約数の個数: 64

約数和(自身を含む): 51217920

約数和(自身を除く): 32136200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 2963, 3220, 5926, 6440, 11852, 14815, 20741, 23704, 29630, 41482, 59260, 68149, 82964, 103705, 118520, 136298, 165928, 207410, 272596, 340745, 414820, 477043, 545192, 681490, 829640, 954086, 1362980, 1908172, 2385215, 2725960, 3816344, 4770430, 9540860, 19081720]

約数ペア:

[(1, 19081720), (2, 9540860), (4, 4770430), (5, 3816344), (7, 2725960), (8, 2385215), (10, 1908172), (14, 1362980), (20, 954086), (23, 829640), (28, 681490), (35, 545192), (40, 477043), (46, 414820), (56, 340745), (70, 272596), (92, 207410), (115, 165928), (140, 136298), (161, 118520), (184, 103705), (230, 82964), (280, 68149), (322, 59260), (460, 41482), (644, 29630), (805, 23704), (920, 20741), (1288, 14815), (1610, 11852), (2963, 6440), (3220, 5926)]