981061040

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{112507}}^1$

素因数の和:112629

約数の個数: 40

約数和(自身を含む): 2301913680

約数和(自身を除く): 1320852640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 112507, 225014, 450028, 562535, 900056, 1125070, 1800112, 2250140, 4500280, 9000560, 12263263, 24526526, 49053052, 61316315, 98106104, 122632630, 196212208, 245265260, 490530520, 981061040]

約数ペア:

[(1, 981061040), (2, 490530520), (4, 245265260), (5, 196212208), (8, 122632630), (10, 98106104), (16, 61316315), (20, 49053052), (40, 24526526), (80, 12263263), (109, 9000560), (218, 4500280), (436, 2250140), (545, 1800112), (872, 1125070), (1090, 900056), (1744, 562535), (2180, 450028), (4360, 225014), (8720, 112507)]