20961018

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{269}}^1$

素因数の和:333

約数の個数: 80

約数和(自身を含む): 52141320

約数和(自身を除く): 31180302

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 37, 39, 54, 74, 78, 81, 111, 117, 162, 222, 234, 269, 333, 351, 481, 538, 666, 702, 807, 962, 999, 1053, 1443, 1614, 1998, 2106, 2421, 2886, 2997, 3497, 4329, 4842, 5994, 6994, 7263, 8658, 9953, 10491, 12987, 14526, 19906, 20982, 21789, 25974, 29859, 31473, 38961, 43578, 59718, 62946, 77922, 89577, 94419, 129389, 179154, 188838, 258778, 268731, 283257, 388167, 537462, 566514, 776334, 806193, 1164501, 1612386, 2329002, 3493503, 6987006, 10480509, 20961018]

約数ペア:

[(1, 20961018), (2, 10480509), (3, 6987006), (6, 3493503), (9, 2329002), (13, 1612386), (18, 1164501), (26, 806193), (27, 776334), (37, 566514), (39, 537462), (54, 388167), (74, 283257), (78, 268731), (81, 258778), (111, 188838), (117, 179154), (162, 129389), (222, 94419), (234, 89577), (269, 77922), (333, 62946), (351, 59718), (481, 43578), (538, 38961), (666, 31473), (702, 29859), (807, 25974), (962, 21789), (999, 20982), (1053, 19906), (1443, 14526), (1614, 12987), (1998, 10491), (2106, 9953), (2421, 8658), (2886, 7263), (2997, 6994), (3497, 5994), (4329, 4842)]