211380921

素因数分解:

$3^4\times {\mathrm{61}}^1\times {\mathrm{179}}^1\times {\mathrm{239}}^1$

素因数の和:491

約数の個数: 40

約数和(自身を含む): 324086400

約数和(自身を除く): 112705479

約数列:

[1, 3, 9, 27, 61, 81, 179, 183, 239, 537, 549, 717, 1611, 1647, 2151, 4833, 4941, 6453, 10919, 14499, 14579, 19359, 32757, 42781, 43737, 98271, 128343, 131211, 294813, 385029, 393633, 884439, 1155087, 1180899, 2609641, 3465261, 7828923, 23486769, 70460307, 211380921]

約数ペア:

[(1, 211380921), (3, 70460307), (9, 23486769), (27, 7828923), (61, 3465261), (81, 2609641), (179, 1180899), (183, 1155087), (239, 884439), (537, 393633), (549, 385029), (717, 294813), (1611, 131211), (1647, 128343), (2151, 98271), (4833, 43737), (4941, 42781), (6453, 32757), (10919, 19359), (14499, 14579)]