261518640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{1089661}}^1$

素因数の和:1089677

約数の個数: 40

約数和(自身を含む): 810708528

約数和(自身を除く): 549189888

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 1089661, 2179322, 3268983, 4358644, 5448305, 6537966, 8717288, 10896610, 13075932, 16344915, 17434576, 21793220, 26151864, 32689830, 43586440, 52303728, 65379660, 87172880, 130759320, 261518640]

約数ペア:

[(1, 261518640), (2, 130759320), (3, 87172880), (4, 65379660), (5, 52303728), (6, 43586440), (8, 32689830), (10, 26151864), (12, 21793220), (15, 17434576), (16, 16344915), (20, 13075932), (24, 10896610), (30, 8717288), (40, 6537966), (48, 5448305), (60, 4358644), (80, 3268983), (120, 2179322), (240, 1089661)]