18745965

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{239}}^1$

素因数の和:343

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 19961235

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 83, 105, 135, 189, 239, 249, 315, 415, 581, 717, 747, 945, 1195, 1245, 1673, 1743, 2151, 2241, 2905, 3585, 3735, 5019, 5229, 6453, 8365, 8715, 10755, 11205, 15057, 15687, 19837, 25095, 26145, 32265, 45171, 59511, 75285, 78435, 99185, 138859, 178533, 225855, 297555, 416577, 535599, 694295, 892665, 1249731, 2082885, 2677995, 3749193, 6248655, 18745965]

約数ペア:

[(1, 18745965), (3, 6248655), (5, 3749193), (7, 2677995), (9, 2082885), (15, 1249731), (21, 892665), (27, 694295), (35, 535599), (45, 416577), (63, 297555), (83, 225855), (105, 178533), (135, 138859), (189, 99185), (239, 78435), (249, 75285), (315, 59511), (415, 45171), (581, 32265), (717, 26145), (747, 25095), (945, 19837), (1195, 15687), (1245, 15057), (1673, 11205), (1743, 10755), (2151, 8715), (2241, 8365), (2905, 6453), (3585, 5229), (3735, 5019)]