21607690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{479}}^1$

素因数の和:846

約数の個数: 32

約数和(自身を含む): 42094080

約数和(自身を除く): 20486390

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 347, 479, 694, 958, 1735, 2395, 3470, 4511, 4790, 6227, 9022, 12454, 22555, 31135, 45110, 62270, 166213, 332426, 831065, 1662130, 2160769, 4321538, 10803845, 21607690]

約数ペア:

[(1, 21607690), (2, 10803845), (5, 4321538), (10, 2160769), (13, 1662130), (26, 831065), (65, 332426), (130, 166213), (347, 62270), (479, 45110), (694, 31135), (958, 22555), (1735, 12454), (2395, 9022), (3470, 6227), (4511, 4790)]