1898540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 4644864

約数和(自身を除く): 2746324

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 191, 284, 355, 382, 497, 710, 764, 955, 994, 1337, 1420, 1910, 1988, 2485, 2674, 3820, 4970, 5348, 6685, 9940, 13370, 13561, 26740, 27122, 54244, 67805, 94927, 135610, 189854, 271220, 379708, 474635, 949270, 1898540]

約数ペア:

[(1, 1898540), (2, 949270), (4, 474635), (5, 379708), (7, 271220), (10, 189854), (14, 135610), (20, 94927), (28, 67805), (35, 54244), (70, 27122), (71, 26740), (140, 13561), (142, 13370), (191, 9940), (284, 6685), (355, 5348), (382, 4970), (497, 3820), (710, 2674), (764, 2485), (955, 1988), (994, 1910), (1337, 1420)]