21425796

素因数分解:

$2^2\times 3^5\times 7^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:140

約数の個数: 144

約数和(自身を含む): 66533376

約数和(自身を除く): 45107580

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 47, 54, 63, 67, 81, 84, 94, 108, 126, 134, 141, 162, 188, 189, 201, 243, 252, 268, 282, 324, 329, 378, 402, 423, 469, 486, 564, 567, 603, 658, 756, 804, 846, 938, 972, 987, 1134, 1206, 1269, 1316, 1407, 1692, 1701, 1809, 1876, 1974, 2268, 2412, 2538, 2814, 2961, 3149, 3402, 3618, 3807, 3948, 4221, 5076, 5427, 5628, 5922, 6298, 6804, 7236, 7614, 8442, 8883, 9447, 10854, 11421, 11844, 12596, 12663, 15228, 16281, 16884, 17766, 18894, 21708, 22043, 22842, 25326, 26649, 28341, 32562, 35532, 37788, 37989, 44086, 45684, 50652, 53298, 56682, 65124, 66129, 75978, 79947, 85023, 88172, 106596, 113364, 113967, 132258, 151956, 159894, 170046, 198387, 227934, 255069, 264516, 319788, 340092, 396774, 455868, 510138, 595161, 765207, 793548, 1020276, 1190322, 1530414, 1785483, 2380644, 3060828, 3570966, 5356449, 7141932, 10712898, 21425796]

約数ペア:

[(1, 21425796), (2, 10712898), (3, 7141932), (4, 5356449), (6, 3570966), (7, 3060828), (9, 2380644), (12, 1785483), (14, 1530414), (18, 1190322), (21, 1020276), (27, 793548), (28, 765207), (36, 595161), (42, 510138), (47, 455868), (54, 396774), (63, 340092), (67, 319788), (81, 264516), (84, 255069), (94, 227934), (108, 198387), (126, 170046), (134, 159894), (141, 151956), (162, 132258), (188, 113967), (189, 113364), (201, 106596), (243, 88172), (252, 85023), (268, 79947), (282, 75978), (324, 66129), (329, 65124), (378, 56682), (402, 53298), (423, 50652), (469, 45684), (486, 44086), (564, 37989), (567, 37788), (603, 35532), (658, 32562), (756, 28341), (804, 26649), (846, 25326), (938, 22842), (972, 22043), (987, 21708), (1134, 18894), (1206, 17766), (1269, 16884), (1316, 16281), (1407, 15228), (1692, 12663), (1701, 12596), (1809, 11844), (1876, 11421), (1974, 10854), (2268, 9447), (2412, 8883), (2538, 8442), (2814, 7614), (2961, 7236), (3149, 6804), (3402, 6298), (3618, 5922), (3807, 5628), (3948, 5427), (4221, 5076)]