2121980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{659}}^1$

素因数の和:698

約数の個数: 48

約数和(自身を含む): 5322240

約数和(自身を除く): 3200260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 659, 805, 1318, 1610, 2636, 3220, 3295, 4613, 6590, 9226, 13180, 15157, 18452, 23065, 30314, 46130, 60628, 75785, 92260, 106099, 151570, 212198, 303140, 424396, 530495, 1060990, 2121980]

約数ペア:

[(1, 2121980), (2, 1060990), (4, 530495), (5, 424396), (7, 303140), (10, 212198), (14, 151570), (20, 106099), (23, 92260), (28, 75785), (35, 60628), (46, 46130), (70, 30314), (92, 23065), (115, 18452), (140, 15157), (161, 13180), (230, 9226), (322, 6590), (460, 4613), (644, 3295), (659, 3220), (805, 2636), (1318, 1610)]