21857820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{337}}^1$

素因数の和:419

約数の個数: 96

約数和(自身を含む): 65415168

約数和(自身を除く): 43557348

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 47, 60, 69, 92, 94, 115, 138, 141, 188, 230, 235, 276, 282, 337, 345, 460, 470, 564, 674, 690, 705, 940, 1011, 1081, 1348, 1380, 1410, 1685, 2022, 2162, 2820, 3243, 3370, 4044, 4324, 5055, 5405, 6486, 6740, 7751, 10110, 10810, 12972, 15502, 15839, 16215, 20220, 21620, 23253, 31004, 31678, 32430, 38755, 46506, 47517, 63356, 64860, 77510, 79195, 93012, 95034, 116265, 155020, 158390, 190068, 232530, 237585, 316780, 364297, 465060, 475170, 728594, 950340, 1092891, 1457188, 1821485, 2185782, 3642970, 4371564, 5464455, 7285940, 10928910, 21857820]

約数ペア:

[(1, 21857820), (2, 10928910), (3, 7285940), (4, 5464455), (5, 4371564), (6, 3642970), (10, 2185782), (12, 1821485), (15, 1457188), (20, 1092891), (23, 950340), (30, 728594), (46, 475170), (47, 465060), (60, 364297), (69, 316780), (92, 237585), (94, 232530), (115, 190068), (138, 158390), (141, 155020), (188, 116265), (230, 95034), (235, 93012), (276, 79195), (282, 77510), (337, 64860), (345, 63356), (460, 47517), (470, 46506), (564, 38755), (674, 32430), (690, 31678), (705, 31004), (940, 23253), (1011, 21620), (1081, 20220), (1348, 16215), (1380, 15839), (1410, 15502), (1685, 12972), (2022, 10810), (2162, 10110), (2820, 7751), (3243, 6740), (3370, 6486), (4044, 5405), (4324, 5055)]