20416560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{877}}^1$

素因数の和:990

約数の個数: 80

約数和(自身を含む): 64016736

約数和(自身を除く): 43600176

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 97, 120, 194, 240, 291, 388, 485, 582, 776, 877, 970, 1164, 1455, 1552, 1754, 1940, 2328, 2631, 2910, 3508, 3880, 4385, 4656, 5262, 5820, 7016, 7760, 8770, 10524, 11640, 13155, 14032, 17540, 21048, 23280, 26310, 35080, 42096, 52620, 70160, 85069, 105240, 170138, 210480, 255207, 340276, 425345, 510414, 680552, 850690, 1020828, 1276035, 1361104, 1701380, 2041656, 2552070, 3402760, 4083312, 5104140, 6805520, 10208280, 20416560]

約数ペア:

[(1, 20416560), (2, 10208280), (3, 6805520), (4, 5104140), (5, 4083312), (6, 3402760), (8, 2552070), (10, 2041656), (12, 1701380), (15, 1361104), (16, 1276035), (20, 1020828), (24, 850690), (30, 680552), (40, 510414), (48, 425345), (60, 340276), (80, 255207), (97, 210480), (120, 170138), (194, 105240), (240, 85069), (291, 70160), (388, 52620), (485, 42096), (582, 35080), (776, 26310), (877, 23280), (970, 21048), (1164, 17540), (1455, 14032), (1552, 13155), (1754, 11640), (1940, 10524), (2328, 8770), (2631, 7760), (2910, 7016), (3508, 5820), (3880, 5262), (4385, 4656)]