427420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:130

約数の個数: 48

約数和(自身を含む): 1064448

約数和(自身を除く): 637028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 71, 86, 140, 142, 172, 215, 284, 301, 355, 430, 497, 602, 710, 860, 994, 1204, 1420, 1505, 1988, 2485, 3010, 3053, 4970, 6020, 6106, 9940, 12212, 15265, 21371, 30530, 42742, 61060, 85484, 106855, 213710, 427420]

約数ペア:

[(1, 427420), (2, 213710), (4, 106855), (5, 85484), (7, 61060), (10, 42742), (14, 30530), (20, 21371), (28, 15265), (35, 12212), (43, 9940), (70, 6106), (71, 6020), (86, 4970), (140, 3053), (142, 3010), (172, 2485), (215, 1988), (284, 1505), (301, 1420), (355, 1204), (430, 994), (497, 860), (602, 710)]