12805905

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:179

約数の個数: 64

約数和(自身を含む): 25344000

約数和(自身を除く): 12538095

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 131, 133, 147, 245, 285, 343, 393, 399, 655, 665, 735, 917, 931, 1029, 1715, 1965, 1995, 2489, 2751, 2793, 4585, 4655, 5145, 6419, 6517, 7467, 12445, 13755, 13965, 17423, 19257, 19551, 32095, 32585, 37335, 44933, 52269, 87115, 96285, 97755, 121961, 134799, 224665, 261345, 365883, 609805, 673995, 853727, 1829415, 2561181, 4268635, 12805905]

約数ペア:

[(1, 12805905), (3, 4268635), (5, 2561181), (7, 1829415), (15, 853727), (19, 673995), (21, 609805), (35, 365883), (49, 261345), (57, 224665), (95, 134799), (105, 121961), (131, 97755), (133, 96285), (147, 87115), (245, 52269), (285, 44933), (343, 37335), (393, 32585), (399, 32095), (655, 19551), (665, 19257), (735, 17423), (917, 13965), (931, 13755), (1029, 12445), (1715, 7467), (1965, 6517), (1995, 6419), (2489, 5145), (2751, 4655), (2793, 4585)]