81171800

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{521}}^1$

素因数の和:597

約数の個数: 96

約数和(自身を含む): 203893200

約数和(自身を除く): 122721400

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 41, 50, 76, 82, 95, 100, 152, 164, 190, 200, 205, 328, 380, 410, 475, 521, 760, 779, 820, 950, 1025, 1042, 1558, 1640, 1900, 2050, 2084, 2605, 3116, 3800, 3895, 4100, 4168, 5210, 6232, 7790, 8200, 9899, 10420, 13025, 15580, 19475, 19798, 20840, 21361, 26050, 31160, 38950, 39596, 42722, 49495, 52100, 77900, 79192, 85444, 98990, 104200, 106805, 155800, 170888, 197980, 213610, 247475, 395960, 405859, 427220, 494950, 534025, 811718, 854440, 989900, 1068050, 1623436, 1979800, 2029295, 2136100, 3246872, 4058590, 4272200, 8117180, 10146475, 16234360, 20292950, 40585900, 81171800]

約数ペア:

[(1, 81171800), (2, 40585900), (4, 20292950), (5, 16234360), (8, 10146475), (10, 8117180), (19, 4272200), (20, 4058590), (25, 3246872), (38, 2136100), (40, 2029295), (41, 1979800), (50, 1623436), (76, 1068050), (82, 989900), (95, 854440), (100, 811718), (152, 534025), (164, 494950), (190, 427220), (200, 405859), (205, 395960), (328, 247475), (380, 213610), (410, 197980), (475, 170888), (521, 155800), (760, 106805), (779, 104200), (820, 98990), (950, 85444), (1025, 79192), (1042, 77900), (1558, 52100), (1640, 49495), (1900, 42722), (2050, 39596), (2084, 38950), (2605, 31160), (3116, 26050), (3800, 21361), (3895, 20840), (4100, 19798), (4168, 19475), (5210, 15580), (6232, 13025), (7790, 10420), (8200, 9899)]