255087189

素因数分解:

$3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{397}}^1$

素因数の和:495

約数の個数: 72

約数和(自身を含む): 452994048

約数和(自身を除く): 197906859

約数列:

[1, 3, 7, 9, 21, 31, 47, 49, 63, 93, 141, 147, 217, 279, 329, 397, 423, 441, 651, 987, 1191, 1457, 1519, 1953, 2303, 2779, 2961, 3573, 4371, 4557, 6909, 8337, 10199, 12307, 13113, 13671, 18659, 19453, 20727, 25011, 30597, 36921, 55977, 58359, 71393, 86149, 91791, 110763, 130613, 167931, 175077, 214179, 258447, 391839, 578429, 603043, 642537, 775341, 914291, 1175517, 1735287, 1809129, 2742873, 4049003, 5205861, 5427387, 8228619, 12147009, 28343021, 36441027, 85029063, 255087189]

約数ペア:

[(1, 255087189), (3, 85029063), (7, 36441027), (9, 28343021), (21, 12147009), (31, 8228619), (47, 5427387), (49, 5205861), (63, 4049003), (93, 2742873), (141, 1809129), (147, 1735287), (217, 1175517), (279, 914291), (329, 775341), (397, 642537), (423, 603043), (441, 578429), (651, 391839), (987, 258447), (1191, 214179), (1457, 175077), (1519, 167931), (1953, 130613), (2303, 110763), (2779, 91791), (2961, 86149), (3573, 71393), (4371, 58359), (4557, 55977), (6909, 36921), (8337, 30597), (10199, 25011), (12307, 20727), (13113, 19453), (13671, 18659)]