1958180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 4790016

約数和(自身を除く): 2831836

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 197, 284, 355, 394, 497, 710, 788, 985, 994, 1379, 1420, 1970, 1988, 2485, 2758, 3940, 4970, 5516, 6895, 9940, 13790, 13987, 27580, 27974, 55948, 69935, 97909, 139870, 195818, 279740, 391636, 489545, 979090, 1958180]

約数ペア:

[(1, 1958180), (2, 979090), (4, 489545), (5, 391636), (7, 279740), (10, 195818), (14, 139870), (20, 97909), (28, 69935), (35, 55948), (70, 27974), (71, 27580), (140, 13987), (142, 13790), (197, 9940), (284, 6895), (355, 5516), (394, 4970), (497, 3940), (710, 2758), (788, 2485), (985, 1988), (994, 1970), (1379, 1420)]