28278180

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{7481}}^1$

素因数の和:7506

約数の個数: 96

約数和(自身を含む): 100558080

約数和(自身を除く): 72279900

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 7481, 14962, 22443, 29924, 37405, 44886, 52367, 67329, 74810, 89772, 104734, 112215, 134658, 149620, 157101, 201987, 209468, 224430, 261835, 269316, 314202, 336645, 403974, 448860, 471303, 523670, 628404, 673290, 785505, 807948, 942606, 1009935, 1047340, 1346580, 1413909, 1571010, 1885212, 2019870, 2356515, 2827818, 3142020, 4039740, 4713030, 5655636, 7069545, 9426060, 14139090, 28278180]

約数ペア:

[(1, 28278180), (2, 14139090), (3, 9426060), (4, 7069545), (5, 5655636), (6, 4713030), (7, 4039740), (9, 3142020), (10, 2827818), (12, 2356515), (14, 2019870), (15, 1885212), (18, 1571010), (20, 1413909), (21, 1346580), (27, 1047340), (28, 1009935), (30, 942606), (35, 807948), (36, 785505), (42, 673290), (45, 628404), (54, 523670), (60, 471303), (63, 448860), (70, 403974), (84, 336645), (90, 314202), (105, 269316), (108, 261835), (126, 224430), (135, 209468), (140, 201987), (180, 157101), (189, 149620), (210, 134658), (252, 112215), (270, 104734), (315, 89772), (378, 74810), (420, 67329), (540, 52367), (630, 44886), (756, 37405), (945, 29924), (1260, 22443), (1890, 14962), (3780, 7481)]