2142940

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{983}}^1$

素因数の和:1101

約数の個数: 24

約数和(自身を含む): 4546080

約数和(自身を除く): 2403140

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 983, 1090, 1966, 2180, 3932, 4915, 9830, 19660, 107147, 214294, 428588, 535735, 1071470, 2142940]

約数ペア:

[(1, 2142940), (2, 1071470), (4, 535735), (5, 428588), (10, 214294), (20, 107147), (109, 19660), (218, 9830), (436, 4915), (545, 3932), (983, 2180), (1090, 1966)]