21088816

素因数分解:

$2^4\times 7^2\times {\mathrm{37}}^1\times {\mathrm{727}}^1$

素因数の和:786

約数の個数: 60

約数和(自身を含む): 48882288

約数和(自身を除く): 27793472

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 49, 56, 74, 98, 112, 148, 196, 259, 296, 392, 518, 592, 727, 784, 1036, 1454, 1813, 2072, 2908, 3626, 4144, 5089, 5816, 7252, 10178, 11632, 14504, 20356, 26899, 29008, 35623, 40712, 53798, 71246, 81424, 107596, 142492, 188293, 215192, 284984, 376586, 430384, 569968, 753172, 1318051, 1506344, 2636102, 3012688, 5272204, 10544408, 21088816]

約数ペア:

[(1, 21088816), (2, 10544408), (4, 5272204), (7, 3012688), (8, 2636102), (14, 1506344), (16, 1318051), (28, 753172), (37, 569968), (49, 430384), (56, 376586), (74, 284984), (98, 215192), (112, 188293), (148, 142492), (196, 107596), (259, 81424), (296, 71246), (392, 53798), (518, 40712), (592, 35623), (727, 29008), (784, 26899), (1036, 20356), (1454, 14504), (1813, 11632), (2072, 10178), (2908, 7252), (3626, 5816), (4144, 5089)]