21828728

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{1091}}^1$

素因数の和:1199

約数の個数: 32

約数和(自身を含む): 42653520

約数和(自身を除く): 20824792

約数列:

[1, 2, 4, 8, 41, 61, 82, 122, 164, 244, 328, 488, 1091, 2182, 2501, 4364, 5002, 8728, 10004, 20008, 44731, 66551, 89462, 133102, 178924, 266204, 357848, 532408, 2728591, 5457182, 10914364, 21828728]

約数ペア:

[(1, 21828728), (2, 10914364), (4, 5457182), (8, 2728591), (41, 532408), (61, 357848), (82, 266204), (122, 178924), (164, 133102), (244, 89462), (328, 66551), (488, 44731), (1091, 20008), (2182, 10004), (2501, 8728), (4364, 5002)]