21480416

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{293}}^1$

素因数の和:411

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 22972384

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 79, 116, 158, 232, 293, 316, 464, 586, 632, 928, 1172, 1264, 2291, 2344, 2528, 4582, 4688, 8497, 9164, 9376, 16994, 18328, 23147, 33988, 36656, 46294, 67976, 73312, 92588, 135952, 185176, 271904, 370352, 671263, 740704, 1342526, 2685052, 5370104, 10740208, 21480416]

約数ペア:

[(1, 21480416), (2, 10740208), (4, 5370104), (8, 2685052), (16, 1342526), (29, 740704), (32, 671263), (58, 370352), (79, 271904), (116, 185176), (158, 135952), (232, 92588), (293, 73312), (316, 67976), (464, 46294), (586, 36656), (632, 33988), (928, 23147), (1172, 18328), (1264, 16994), (2291, 9376), (2344, 9164), (2528, 8497), (4582, 4688)]