20688320

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3803}}^1$

素因数の和:3837

約数の個数: 56

約数和(自身を含む): 52175664

約数和(自身を除く): 31487344

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 272, 320, 340, 544, 680, 1088, 1360, 2720, 3803, 5440, 7606, 15212, 19015, 30424, 38030, 60848, 64651, 76060, 121696, 129302, 152120, 243392, 258604, 304240, 323255, 517208, 608480, 646510, 1034416, 1216960, 1293020, 2068832, 2586040, 4137664, 5172080, 10344160, 20688320]

約数ペア:

[(1, 20688320), (2, 10344160), (4, 5172080), (5, 4137664), (8, 2586040), (10, 2068832), (16, 1293020), (17, 1216960), (20, 1034416), (32, 646510), (34, 608480), (40, 517208), (64, 323255), (68, 304240), (80, 258604), (85, 243392), (136, 152120), (160, 129302), (170, 121696), (272, 76060), (320, 64651), (340, 60848), (544, 38030), (680, 30424), (1088, 19015), (1360, 15212), (2720, 7606), (3803, 5440)]