6490820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{653}}^1$

素因数の和:740

約数の個数: 48

約数和(自身を含む): 15821568

約数和(自身を除く): 9330748

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 653, 710, 994, 1306, 1420, 1988, 2485, 2612, 3265, 4571, 4970, 6530, 9142, 9940, 13060, 18284, 22855, 45710, 46363, 91420, 92726, 185452, 231815, 324541, 463630, 649082, 927260, 1298164, 1622705, 3245410, 6490820]

約数ペア:

[(1, 6490820), (2, 3245410), (4, 1622705), (5, 1298164), (7, 927260), (10, 649082), (14, 463630), (20, 324541), (28, 231815), (35, 185452), (70, 92726), (71, 91420), (140, 46363), (142, 45710), (284, 22855), (355, 18284), (497, 13060), (653, 9940), (710, 9142), (994, 6530), (1306, 4970), (1420, 4571), (1988, 3265), (2485, 2612)]