21127792

素因数分解:

$2^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:206

約数の個数: 80

約数和(自身を含む): 49496832

約数和(自身を除く): 28369040

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 41, 43, 56, 82, 86, 107, 112, 164, 172, 214, 287, 301, 328, 344, 428, 574, 602, 656, 688, 749, 856, 1148, 1204, 1498, 1712, 1763, 2296, 2408, 2996, 3526, 4387, 4592, 4601, 4816, 5992, 7052, 8774, 9202, 11984, 12341, 14104, 17548, 18404, 24682, 28208, 30709, 32207, 35096, 36808, 49364, 61418, 64414, 70192, 73616, 98728, 122836, 128828, 188641, 197456, 245672, 257656, 377282, 491344, 515312, 754564, 1320487, 1509128, 2640974, 3018256, 5281948, 10563896, 21127792]

約数ペア:

[(1, 21127792), (2, 10563896), (4, 5281948), (7, 3018256), (8, 2640974), (14, 1509128), (16, 1320487), (28, 754564), (41, 515312), (43, 491344), (56, 377282), (82, 257656), (86, 245672), (107, 197456), (112, 188641), (164, 128828), (172, 122836), (214, 98728), (287, 73616), (301, 70192), (328, 64414), (344, 61418), (428, 49364), (574, 36808), (602, 35096), (656, 32207), (688, 30709), (749, 28208), (856, 24682), (1148, 18404), (1204, 17548), (1498, 14104), (1712, 12341), (1763, 11984), (2296, 9202), (2408, 8774), (2996, 7052), (3526, 5992), (4387, 4816), (4592, 4601)]