81640468

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{179}}^2$

素因数の和:389

約数の個数: 54

約数和(自身を含む): 179986506

約数和(自身を除く): 98346038

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 179, 182, 196, 358, 364, 637, 716, 1253, 1274, 2327, 2506, 2548, 4654, 5012, 8771, 9308, 16289, 17542, 32041, 32578, 35084, 64082, 65156, 114023, 128164, 224287, 228046, 416533, 448574, 456092, 833066, 897148, 1570009, 1666132, 2915731, 3140018, 5831462, 6280036, 11662924, 20410117, 40820234, 81640468]

約数ペア:

[(1, 81640468), (2, 40820234), (4, 20410117), (7, 11662924), (13, 6280036), (14, 5831462), (26, 3140018), (28, 2915731), (49, 1666132), (52, 1570009), (91, 897148), (98, 833066), (179, 456092), (182, 448574), (196, 416533), (358, 228046), (364, 224287), (637, 128164), (716, 114023), (1253, 65156), (1274, 64082), (2327, 35084), (2506, 32578), (2548, 32041), (4654, 17542), (5012, 16289), (8771, 9308)]