20415920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{36457}}^1$

素因数の和:36477

約数の個数: 40

約数和(自身を含む): 54249504

約数和(自身を除く): 33833584

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 36457, 72914, 145828, 182285, 255199, 291656, 364570, 510398, 583312, 729140, 1020796, 1275995, 1458280, 2041592, 2551990, 2916560, 4083184, 5103980, 10207960, 20415920]

約数ペア:

[(1, 20415920), (2, 10207960), (4, 5103980), (5, 4083184), (7, 2916560), (8, 2551990), (10, 2041592), (14, 1458280), (16, 1275995), (20, 1020796), (28, 729140), (35, 583312), (40, 510398), (56, 364570), (70, 291656), (80, 255199), (112, 182285), (140, 145828), (280, 72914), (560, 36457)]