19910790

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1123}}^1$

素因数の和:1333

約数の個数: 48

約数和(自身を含む): 52077168

約数和(自身を除く): 32166378

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 197, 394, 591, 985, 1123, 1182, 1773, 1970, 2246, 2955, 3369, 3546, 5615, 5910, 6738, 8865, 10107, 11230, 16845, 17730, 20214, 33690, 50535, 101070, 221231, 442462, 663693, 1106155, 1327386, 1991079, 2212310, 3318465, 3982158, 6636930, 9955395, 19910790]

約数ペア:

[(1, 19910790), (2, 9955395), (3, 6636930), (5, 3982158), (6, 3318465), (9, 2212310), (10, 1991079), (15, 1327386), (18, 1106155), (30, 663693), (45, 442462), (90, 221231), (197, 101070), (394, 50535), (591, 33690), (985, 20214), (1123, 17730), (1182, 16845), (1773, 11230), (1970, 10107), (2246, 8865), (2955, 6738), (3369, 5910), (3546, 5615)]