21764590

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^3\times {\mathrm{443}}^1$

素因数の和:501

約数の個数: 32

約数和(自身を含む): 41718240

約数和(自身を除く): 19953650

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 289, 443, 578, 886, 1445, 2215, 2890, 4430, 4913, 7531, 9826, 15062, 24565, 37655, 49130, 75310, 128027, 256054, 640135, 1280270, 2176459, 4352918, 10882295, 21764590]

約数ペア:

[(1, 21764590), (2, 10882295), (5, 4352918), (10, 2176459), (17, 1280270), (34, 640135), (85, 256054), (170, 128027), (289, 75310), (443, 49130), (578, 37655), (886, 24565), (1445, 15062), (2215, 9826), (2890, 7531), (4430, 4913)]