21789808

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{313}}^1$

素因数の和:569

約数の個数: 40

約数和(自身を含む): 44776400

約数和(自身を除く): 22986592

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 229, 304, 313, 458, 626, 916, 1252, 1832, 2504, 3664, 4351, 5008, 5947, 8702, 11894, 17404, 23788, 34808, 47576, 69616, 71677, 95152, 143354, 286708, 573416, 1146832, 1361863, 2723726, 5447452, 10894904, 21789808]

約数ペア:

[(1, 21789808), (2, 10894904), (4, 5447452), (8, 2723726), (16, 1361863), (19, 1146832), (38, 573416), (76, 286708), (152, 143354), (229, 95152), (304, 71677), (313, 69616), (458, 47576), (626, 34808), (916, 23788), (1252, 17404), (1832, 11894), (2504, 8702), (3664, 5947), (4351, 5008)]