21907935

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{239}}^1$

素因数の和:357

約数の個数: 64

約数和(自身を含む): 45158400

約数和(自身を除く): 23250465

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 97, 105, 135, 189, 239, 291, 315, 485, 679, 717, 873, 945, 1195, 1455, 1673, 2037, 2151, 2619, 3395, 3585, 4365, 5019, 6111, 6453, 8365, 10185, 10755, 13095, 15057, 18333, 23183, 25095, 30555, 32265, 45171, 69549, 75285, 91665, 115915, 162281, 208647, 225855, 347745, 486843, 625941, 811405, 1043235, 1460529, 2434215, 3129705, 4381587, 7302645, 21907935]

約数ペア:

[(1, 21907935), (3, 7302645), (5, 4381587), (7, 3129705), (9, 2434215), (15, 1460529), (21, 1043235), (27, 811405), (35, 625941), (45, 486843), (63, 347745), (97, 225855), (105, 208647), (135, 162281), (189, 115915), (239, 91665), (291, 75285), (315, 69549), (485, 45171), (679, 32265), (717, 30555), (873, 25095), (945, 23183), (1195, 18333), (1455, 15057), (1673, 13095), (2037, 10755), (2151, 10185), (2619, 8365), (3395, 6453), (3585, 6111), (4365, 5019)]