21358480

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1867}}^1$

素因数の和:1904

約数の個数: 80

約数和(自身を含む): 58371264

約数和(自身を除く): 37012784

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 176, 208, 220, 260, 286, 440, 520, 572, 715, 880, 1040, 1144, 1430, 1867, 2288, 2860, 3734, 5720, 7468, 9335, 11440, 14936, 18670, 20537, 24271, 29872, 37340, 41074, 48542, 74680, 82148, 97084, 102685, 121355, 149360, 164296, 194168, 205370, 242710, 266981, 328592, 388336, 410740, 485420, 533962, 821480, 970840, 1067924, 1334905, 1642960, 1941680, 2135848, 2669810, 4271696, 5339620, 10679240, 21358480]

約数ペア:

[(1, 21358480), (2, 10679240), (4, 5339620), (5, 4271696), (8, 2669810), (10, 2135848), (11, 1941680), (13, 1642960), (16, 1334905), (20, 1067924), (22, 970840), (26, 821480), (40, 533962), (44, 485420), (52, 410740), (55, 388336), (65, 328592), (80, 266981), (88, 242710), (104, 205370), (110, 194168), (130, 164296), (143, 149360), (176, 121355), (208, 102685), (220, 97084), (260, 82148), (286, 74680), (440, 48542), (520, 41074), (572, 37340), (715, 29872), (880, 24271), (1040, 20537), (1144, 18670), (1430, 14936), (1867, 11440), (2288, 9335), (2860, 7468), (3734, 5720)]