131731320

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{156823}}^1$

素因数の和:156844

約数の個数: 64

約数和(自身を含む): 451653120

約数和(自身を除く): 319921800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 156823, 313646, 470469, 627292, 784115, 940938, 1097761, 1254584, 1568230, 1881876, 2195522, 2352345, 3136460, 3293283, 3763752, 4391044, 4704690, 5488805, 6272920, 6586566, 8782088, 9409380, 10977610, 13173132, 16466415, 18818760, 21955220, 26346264, 32932830, 43910440, 65865660, 131731320]

約数ペア:

[(1, 131731320), (2, 65865660), (3, 43910440), (4, 32932830), (5, 26346264), (6, 21955220), (7, 18818760), (8, 16466415), (10, 13173132), (12, 10977610), (14, 9409380), (15, 8782088), (20, 6586566), (21, 6272920), (24, 5488805), (28, 4704690), (30, 4391044), (35, 3763752), (40, 3293283), (42, 3136460), (56, 2352345), (60, 2195522), (70, 1881876), (84, 1568230), (105, 1254584), (120, 1097761), (140, 940938), (168, 784115), (210, 627292), (280, 470469), (420, 313646), (840, 156823)]