18903534

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:245

約数の個数: 64

約数和(自身を含む): 43122240

約数和(自身を除く): 24218706

約数列:

[1, 2, 3, 6, 13, 26, 29, 39, 58, 61, 78, 87, 122, 137, 174, 183, 274, 366, 377, 411, 754, 793, 822, 1131, 1586, 1769, 1781, 2262, 2379, 3538, 3562, 3973, 4758, 5307, 5343, 7946, 8357, 10614, 10686, 11919, 16714, 22997, 23838, 25071, 45994, 50142, 51649, 68991, 103298, 108641, 137982, 154947, 217282, 242353, 309894, 325923, 484706, 651846, 727059, 1454118, 3150589, 6301178, 9451767, 18903534]

約数ペア:

[(1, 18903534), (2, 9451767), (3, 6301178), (6, 3150589), (13, 1454118), (26, 727059), (29, 651846), (39, 484706), (58, 325923), (61, 309894), (78, 242353), (87, 217282), (122, 154947), (137, 137982), (174, 108641), (183, 103298), (274, 68991), (366, 51649), (377, 50142), (411, 45994), (754, 25071), (793, 23838), (822, 22997), (1131, 16714), (1586, 11919), (1769, 10686), (1781, 10614), (2262, 8357), (2379, 7946), (3538, 5343), (3562, 5307), (3973, 4758)]