16872020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1447}}^1$

素因数の和:1520

約数の個数: 48

約数和(自身を含む): 39408768

約数和(自身を除く): 22536748

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 53, 55, 106, 110, 212, 220, 265, 530, 583, 1060, 1166, 1447, 2332, 2894, 2915, 5788, 5830, 7235, 11660, 14470, 15917, 28940, 31834, 63668, 76691, 79585, 153382, 159170, 306764, 318340, 383455, 766910, 843601, 1533820, 1687202, 3374404, 4218005, 8436010, 16872020]

約数ペア:

[(1, 16872020), (2, 8436010), (4, 4218005), (5, 3374404), (10, 1687202), (11, 1533820), (20, 843601), (22, 766910), (44, 383455), (53, 318340), (55, 306764), (106, 159170), (110, 153382), (212, 79585), (220, 76691), (265, 63668), (530, 31834), (583, 28940), (1060, 15917), (1166, 14470), (1447, 11660), (2332, 7235), (2894, 5830), (2915, 5788)]