20897040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{87071}}^1$

素因数の和:87087

約数の個数: 40

約数和(自身を含む): 64781568

約数和(自身を除く): 43884528

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 87071, 174142, 261213, 348284, 435355, 522426, 696568, 870710, 1044852, 1306065, 1393136, 1741420, 2089704, 2612130, 3482840, 4179408, 5224260, 6965680, 10448520, 20897040]

約数ペア:

[(1, 20897040), (2, 10448520), (3, 6965680), (4, 5224260), (5, 4179408), (6, 3482840), (8, 2612130), (10, 2089704), (12, 1741420), (15, 1393136), (16, 1306065), (20, 1044852), (24, 870710), (30, 696568), (40, 522426), (48, 435355), (60, 348284), (80, 261213), (120, 174142), (240, 87071)]