21724130

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{7517}}^1$

素因数の和:7558

約数の個数: 24

約数和(自身を含む): 41544468

約数和(自身を除く): 19820338

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 289, 578, 1445, 2890, 7517, 15034, 37585, 75170, 127789, 255578, 638945, 1277890, 2172413, 4344826, 10862065, 21724130]

約数ペア:

[(1, 21724130), (2, 10862065), (5, 4344826), (10, 2172413), (17, 1277890), (34, 638945), (85, 255578), (170, 127789), (289, 75170), (578, 37585), (1445, 15034), (2890, 7517)]