18845530

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:235

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 20967590

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 71, 95, 110, 127, 142, 190, 209, 254, 355, 418, 635, 710, 781, 1045, 1270, 1349, 1397, 1562, 2090, 2413, 2698, 2794, 3905, 4826, 6745, 6985, 7810, 9017, 12065, 13490, 13970, 14839, 18034, 24130, 26543, 29678, 45085, 53086, 74195, 90170, 99187, 132715, 148390, 171323, 198374, 265430, 342646, 495935, 856615, 991870, 1713230, 1884553, 3769106, 9422765, 18845530]

約数ペア:

[(1, 18845530), (2, 9422765), (5, 3769106), (10, 1884553), (11, 1713230), (19, 991870), (22, 856615), (38, 495935), (55, 342646), (71, 265430), (95, 198374), (110, 171323), (127, 148390), (142, 132715), (190, 99187), (209, 90170), (254, 74195), (355, 53086), (418, 45085), (635, 29678), (710, 26543), (781, 24130), (1045, 18034), (1270, 14839), (1349, 13970), (1397, 13490), (1562, 12065), (2090, 9017), (2413, 7810), (2698, 6985), (2794, 6745), (3905, 4826)]