18891964

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:155

約数の個数: 96

約数和(自身を含む): 44706816

約数和(自身を除く): 25814852

約数列:

[1, 2, 4, 7, 13, 14, 17, 26, 28, 34, 43, 52, 68, 71, 86, 91, 119, 142, 172, 182, 221, 238, 284, 301, 364, 442, 476, 497, 559, 602, 731, 884, 923, 994, 1118, 1204, 1207, 1462, 1547, 1846, 1988, 2236, 2414, 2924, 3053, 3094, 3692, 3913, 4828, 5117, 6106, 6188, 6461, 7826, 8449, 9503, 10234, 12212, 12922, 15652, 15691, 16898, 19006, 20468, 21371, 25844, 31382, 33796, 38012, 39689, 42742, 51901, 62764, 66521, 79378, 85484, 103802, 109837, 133042, 158756, 207604, 219674, 266084, 277823, 363307, 439348, 555646, 674713, 726614, 1111292, 1349426, 1453228, 2698852, 4722991, 9445982, 18891964]

約数ペア:

[(1, 18891964), (2, 9445982), (4, 4722991), (7, 2698852), (13, 1453228), (14, 1349426), (17, 1111292), (26, 726614), (28, 674713), (34, 555646), (43, 439348), (52, 363307), (68, 277823), (71, 266084), (86, 219674), (91, 207604), (119, 158756), (142, 133042), (172, 109837), (182, 103802), (221, 85484), (238, 79378), (284, 66521), (301, 62764), (364, 51901), (442, 42742), (476, 39689), (497, 38012), (559, 33796), (602, 31382), (731, 25844), (884, 21371), (923, 20468), (994, 19006), (1118, 16898), (1204, 15691), (1207, 15652), (1462, 12922), (1547, 12212), (1846, 10234), (1988, 9503), (2236, 8449), (2414, 7826), (2924, 6461), (3053, 6188), (3094, 6106), (3692, 5117), (3913, 4828)]