20479305

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1$

素因数の和:199

約数の個数: 96

約数和(自身を含む): 44323200

約数和(自身を除く): 23843895

約数列:

[1, 3, 5, 7, 11, 15, 17, 21, 33, 35, 49, 51, 55, 77, 85, 105, 119, 147, 149, 165, 187, 231, 245, 255, 357, 385, 447, 539, 561, 595, 735, 745, 833, 935, 1043, 1155, 1309, 1617, 1639, 1785, 2235, 2499, 2533, 2695, 2805, 3129, 3927, 4165, 4917, 5215, 6545, 7301, 7599, 8085, 8195, 9163, 11473, 12495, 12665, 15645, 17731, 19635, 21903, 24585, 27489, 27863, 34419, 36505, 37995, 45815, 53193, 57365, 80311, 83589, 88655, 109515, 124117, 137445, 139315, 172095, 195041, 240933, 265965, 372351, 401555, 417945, 585123, 620585, 975205, 1204665, 1365287, 1861755, 2925615, 4095861, 6826435, 20479305]

約数ペア:

[(1, 20479305), (3, 6826435), (5, 4095861), (7, 2925615), (11, 1861755), (15, 1365287), (17, 1204665), (21, 975205), (33, 620585), (35, 585123), (49, 417945), (51, 401555), (55, 372351), (77, 265965), (85, 240933), (105, 195041), (119, 172095), (147, 139315), (149, 137445), (165, 124117), (187, 109515), (231, 88655), (245, 83589), (255, 80311), (357, 57365), (385, 53193), (447, 45815), (539, 37995), (561, 36505), (595, 34419), (735, 27863), (745, 27489), (833, 24585), (935, 21903), (1043, 19635), (1155, 17731), (1309, 15645), (1617, 12665), (1639, 12495), (1785, 11473), (2235, 9163), (2499, 8195), (2533, 8085), (2695, 7599), (2805, 7301), (3129, 6545), (3927, 5215), (4165, 4917)]