20021960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3109}}^1$

素因数の和:3150

約数の個数: 64

約数和(自身を含む): 53740800

約数和(自身を除く): 33718840

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, 3109, 3220, 6218, 6440, 12436, 15545, 21763, 24872, 31090, 43526, 62180, 71507, 87052, 108815, 124360, 143014, 174104, 217630, 286028, 357535, 435260, 500549, 572056, 715070, 870520, 1001098, 1430140, 2002196, 2502745, 2860280, 4004392, 5005490, 10010980, 20021960]

約数ペア:

[(1, 20021960), (2, 10010980), (4, 5005490), (5, 4004392), (7, 2860280), (8, 2502745), (10, 2002196), (14, 1430140), (20, 1001098), (23, 870520), (28, 715070), (35, 572056), (40, 500549), (46, 435260), (56, 357535), (70, 286028), (92, 217630), (115, 174104), (140, 143014), (161, 124360), (184, 108815), (230, 87052), (280, 71507), (322, 62180), (460, 43526), (644, 31090), (805, 24872), (920, 21763), (1288, 15545), (1610, 12436), (3109, 6440), (3220, 6218)]