21406920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{229}}^1$

素因数の和:303

約数の個数: 128

約数和(自身を含む): 69552000

約数和(自身を除く): 48145080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 41, 57, 60, 76, 82, 95, 114, 120, 123, 152, 164, 190, 205, 228, 229, 246, 285, 328, 380, 410, 456, 458, 492, 570, 615, 687, 760, 779, 820, 916, 984, 1140, 1145, 1230, 1374, 1558, 1640, 1832, 2280, 2290, 2337, 2460, 2748, 3116, 3435, 3895, 4351, 4580, 4674, 4920, 5496, 6232, 6870, 7790, 8702, 9160, 9348, 9389, 11685, 13053, 13740, 15580, 17404, 18696, 18778, 21755, 23370, 26106, 27480, 28167, 31160, 34808, 37556, 43510, 46740, 46945, 52212, 56334, 65265, 75112, 87020, 93480, 93890, 104424, 112668, 130530, 140835, 174040, 178391, 187780, 225336, 261060, 281670, 356782, 375560, 522120, 535173, 563340, 713564, 891955, 1070346, 1126680, 1427128, 1783910, 2140692, 2675865, 3567820, 4281384, 5351730, 7135640, 10703460, 21406920]

約数ペア:

[(1, 21406920), (2, 10703460), (3, 7135640), (4, 5351730), (5, 4281384), (6, 3567820), (8, 2675865), (10, 2140692), (12, 1783910), (15, 1427128), (19, 1126680), (20, 1070346), (24, 891955), (30, 713564), (38, 563340), (40, 535173), (41, 522120), (57, 375560), (60, 356782), (76, 281670), (82, 261060), (95, 225336), (114, 187780), (120, 178391), (123, 174040), (152, 140835), (164, 130530), (190, 112668), (205, 104424), (228, 93890), (229, 93480), (246, 87020), (285, 75112), (328, 65265), (380, 56334), (410, 52212), (456, 46945), (458, 46740), (492, 43510), (570, 37556), (615, 34808), (687, 31160), (760, 28167), (779, 27480), (820, 26106), (916, 23370), (984, 21755), (1140, 18778), (1145, 18696), (1230, 17404), (1374, 15580), (1558, 13740), (1640, 13053), (1832, 11685), (2280, 9389), (2290, 9348), (2337, 9160), (2460, 8702), (2748, 7790), (3116, 6870), (3435, 6232), (3895, 5496), (4351, 4920), (4580, 4674)]