21987784

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{30203}}^1$

素因数の和:30229

約数の個数: 32

約数和(自身を含む): 50742720

約数和(自身を除く): 28754936

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 30203, 60406, 120812, 211421, 241624, 392639, 422842, 785278, 845684, 1570556, 1691368, 2748473, 3141112, 5496946, 10993892, 21987784]

約数ペア:

[(1, 21987784), (2, 10993892), (4, 5496946), (7, 3141112), (8, 2748473), (13, 1691368), (14, 1570556), (26, 845684), (28, 785278), (52, 422842), (56, 392639), (91, 241624), (104, 211421), (182, 120812), (364, 60406), (728, 30203)]