20299916

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:319

約数の個数: 72

約数和(自身を含む): 46118016

約数和(自身を除く): 25818100

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 49, 52, 62, 91, 98, 124, 182, 196, 217, 257, 364, 403, 434, 514, 637, 806, 868, 1028, 1274, 1519, 1612, 1799, 2548, 2821, 3038, 3341, 3598, 5642, 6076, 6682, 7196, 7967, 11284, 12593, 13364, 15934, 19747, 23387, 25186, 31868, 39494, 46774, 50372, 55769, 78988, 93548, 103571, 111538, 163709, 207142, 223076, 327418, 390383, 414284, 654836, 724997, 780766, 1449994, 1561532, 2899988, 5074979, 10149958, 20299916]

約数ペア:

[(1, 20299916), (2, 10149958), (4, 5074979), (7, 2899988), (13, 1561532), (14, 1449994), (26, 780766), (28, 724997), (31, 654836), (49, 414284), (52, 390383), (62, 327418), (91, 223076), (98, 207142), (124, 163709), (182, 111538), (196, 103571), (217, 93548), (257, 78988), (364, 55769), (403, 50372), (434, 46774), (514, 39494), (637, 31868), (806, 25186), (868, 23387), (1028, 19747), (1274, 15934), (1519, 13364), (1612, 12593), (1799, 11284), (2548, 7967), (2821, 7196), (3038, 6682), (3341, 6076), (3598, 5642)]