28407280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1699}}^1$

素因数の和:1742

約数の個数: 80

約数和(自身を含む): 75888000

約数和(自身を除く): 47480720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 152, 176, 190, 209, 220, 304, 380, 418, 440, 760, 836, 880, 1045, 1520, 1672, 1699, 2090, 3344, 3398, 4180, 6796, 8360, 8495, 13592, 16720, 16990, 18689, 27184, 32281, 33980, 37378, 64562, 67960, 74756, 93445, 129124, 135920, 149512, 161405, 186890, 258248, 299024, 322810, 355091, 373780, 516496, 645620, 710182, 747560, 1291240, 1420364, 1495120, 1775455, 2582480, 2840728, 3550910, 5681456, 7101820, 14203640, 28407280]

約数ペア:

[(1, 28407280), (2, 14203640), (4, 7101820), (5, 5681456), (8, 3550910), (10, 2840728), (11, 2582480), (16, 1775455), (19, 1495120), (20, 1420364), (22, 1291240), (38, 747560), (40, 710182), (44, 645620), (55, 516496), (76, 373780), (80, 355091), (88, 322810), (95, 299024), (110, 258248), (152, 186890), (176, 161405), (190, 149512), (209, 135920), (220, 129124), (304, 93445), (380, 74756), (418, 67960), (440, 64562), (760, 37378), (836, 33980), (880, 32281), (1045, 27184), (1520, 18689), (1672, 16990), (1699, 16720), (2090, 13592), (3344, 8495), (3398, 8360), (4180, 6796)]