20897570

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2113}}^1$

素因数の和:2186

約数の個数: 32

約数和(自身を含む): 40182912

約数和(自身を除く): 19285342

約数列:

[1, 2, 5, 10, 23, 43, 46, 86, 115, 215, 230, 430, 989, 1978, 2113, 4226, 4945, 9890, 10565, 21130, 48599, 90859, 97198, 181718, 242995, 454295, 485990, 908590, 2089757, 4179514, 10448785, 20897570]

約数ペア:

[(1, 20897570), (2, 10448785), (5, 4179514), (10, 2089757), (23, 908590), (43, 485990), (46, 454295), (86, 242995), (115, 181718), (215, 97198), (230, 90859), (430, 48599), (989, 21130), (1978, 10565), (2113, 9890), (4226, 4945)]