131556280

素因数分解:

$2^3\times 5^1\times {\mathrm{1613}}^1\times {\mathrm{2039}}^1$

素因数の和:3663

約数の個数: 32

約数和(自身を含む): 296330400

約数和(自身を除く): 164774120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1613, 2039, 3226, 4078, 6452, 8065, 8156, 10195, 12904, 16130, 16312, 20390, 32260, 40780, 64520, 81560, 3288907, 6577814, 13155628, 16444535, 26311256, 32889070, 65778140, 131556280]

約数ペア:

[(1, 131556280), (2, 65778140), (4, 32889070), (5, 26311256), (8, 16444535), (10, 13155628), (20, 6577814), (40, 3288907), (1613, 81560), (2039, 64520), (3226, 40780), (4078, 32260), (6452, 20390), (8065, 16312), (8156, 16130), (10195, 12904)]