42740020

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{25747}}^1$

素因数の和:25839

約数の個数: 24

約数和(自身を含む): 90838944

約数和(自身を除く): 48098924

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 25747, 51494, 102988, 128735, 257470, 514940, 2137001, 4274002, 8548004, 10685005, 21370010, 42740020]

約数ペア:

[(1, 42740020), (2, 21370010), (4, 10685005), (5, 8548004), (10, 4274002), (20, 2137001), (83, 514940), (166, 257470), (332, 128735), (415, 102988), (830, 51494), (1660, 25747)]