18791920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1459}}^1$

素因数の和:1502

約数の個数: 80

約数和(自身を含む): 52139520

約数和(自身を除く): 33347600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1459, 1610, 1840, 2576, 2918, 3220, 5836, 6440, 7295, 10213, 11672, 12880, 14590, 20426, 23344, 29180, 33557, 40852, 51065, 58360, 67114, 81704, 102130, 116720, 134228, 163408, 167785, 204260, 234899, 268456, 335570, 408520, 469798, 536912, 671140, 817040, 939596, 1174495, 1342280, 1879192, 2348990, 2684560, 3758384, 4697980, 9395960, 18791920]

約数ペア:

[(1, 18791920), (2, 9395960), (4, 4697980), (5, 3758384), (7, 2684560), (8, 2348990), (10, 1879192), (14, 1342280), (16, 1174495), (20, 939596), (23, 817040), (28, 671140), (35, 536912), (40, 469798), (46, 408520), (56, 335570), (70, 268456), (80, 234899), (92, 204260), (112, 167785), (115, 163408), (140, 134228), (161, 116720), (184, 102130), (230, 81704), (280, 67114), (322, 58360), (368, 51065), (460, 40852), (560, 33557), (644, 29180), (805, 23344), (920, 20426), (1288, 14590), (1459, 12880), (1610, 11672), (1840, 10213), (2576, 7295), (2918, 6440), (3220, 5836)]