90165040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{161009}}^1$

素因数の和:161029

約数の個数: 40

約数和(自身を含む): 239582880

約数和(自身を除く): 149417840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 161009, 322018, 644036, 805045, 1127063, 1288072, 1610090, 2254126, 2576144, 3220180, 4508252, 5635315, 6440360, 9016504, 11270630, 12880720, 18033008, 22541260, 45082520, 90165040]

約数ペア:

[(1, 90165040), (2, 45082520), (4, 22541260), (5, 18033008), (7, 12880720), (8, 11270630), (10, 9016504), (14, 6440360), (16, 5635315), (20, 4508252), (28, 3220180), (35, 2576144), (40, 2254126), (56, 1610090), (70, 1288072), (80, 1127063), (112, 805045), (140, 644036), (280, 322018), (560, 161009)]