20968320

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:252

約数の個数: 128

約数和(自身を含む): 68250240

約数和(自身を除く): 47281920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 67, 80, 96, 120, 128, 134, 160, 163, 192, 201, 240, 268, 320, 326, 335, 384, 402, 480, 489, 536, 640, 652, 670, 804, 815, 960, 978, 1005, 1072, 1304, 1340, 1608, 1630, 1920, 1956, 2010, 2144, 2445, 2608, 2680, 3216, 3260, 3912, 4020, 4288, 4890, 5216, 5360, 6432, 6520, 7824, 8040, 8576, 9780, 10432, 10720, 10921, 12864, 13040, 15648, 16080, 19560, 20864, 21440, 21842, 25728, 26080, 31296, 32160, 32763, 39120, 42880, 43684, 52160, 54605, 62592, 64320, 65526, 78240, 87368, 104320, 109210, 128640, 131052, 156480, 163815, 174736, 218420, 262104, 312960, 327630, 349472, 436840, 524208, 655260, 698944, 873680, 1048416, 1310520, 1397888, 1747360, 2096832, 2621040, 3494720, 4193664, 5242080, 6989440, 10484160, 20968320]

約数ペア:

[(1, 20968320), (2, 10484160), (3, 6989440), (4, 5242080), (5, 4193664), (6, 3494720), (8, 2621040), (10, 2096832), (12, 1747360), (15, 1397888), (16, 1310520), (20, 1048416), (24, 873680), (30, 698944), (32, 655260), (40, 524208), (48, 436840), (60, 349472), (64, 327630), (67, 312960), (80, 262104), (96, 218420), (120, 174736), (128, 163815), (134, 156480), (160, 131052), (163, 128640), (192, 109210), (201, 104320), (240, 87368), (268, 78240), (320, 65526), (326, 64320), (335, 62592), (384, 54605), (402, 52160), (480, 43684), (489, 42880), (536, 39120), (640, 32763), (652, 32160), (670, 31296), (804, 26080), (815, 25728), (960, 21842), (978, 21440), (1005, 20864), (1072, 19560), (1304, 16080), (1340, 15648), (1608, 13040), (1630, 12864), (1920, 10921), (1956, 10720), (2010, 10432), (2144, 9780), (2445, 8576), (2608, 8040), (2680, 7824), (3216, 6520), (3260, 6432), (3912, 5360), (4020, 5216), (4288, 4890)]