639478866

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{193}}^1\times {\mathrm{397}}^1$

素因数の和:715

約数の個数: 64

約数和(自身を含む): 1400934528

約数和(自身を除く): 761455662

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 107, 193, 214, 321, 386, 397, 579, 642, 794, 1158, 1191, 1391, 2382, 2509, 2782, 4173, 5018, 5161, 7527, 8346, 10322, 15054, 15483, 20651, 30966, 41302, 42479, 61953, 76621, 84958, 123906, 127437, 153242, 229863, 254874, 268463, 459726, 536926, 552227, 805389, 996073, 1104454, 1610778, 1656681, 1992146, 2988219, 3313362, 5976438, 8198447, 16396894, 24595341, 49190682, 106579811, 213159622, 319739433, 639478866]

約数ペア:

[(1, 639478866), (2, 319739433), (3, 213159622), (6, 106579811), (13, 49190682), (26, 24595341), (39, 16396894), (78, 8198447), (107, 5976438), (193, 3313362), (214, 2988219), (321, 1992146), (386, 1656681), (397, 1610778), (579, 1104454), (642, 996073), (794, 805389), (1158, 552227), (1191, 536926), (1391, 459726), (2382, 268463), (2509, 254874), (2782, 229863), (4173, 153242), (5018, 127437), (5161, 123906), (7527, 84958), (8346, 76621), (10322, 61953), (15054, 42479), (15483, 41302), (20651, 30966)]