87997720

素因数分解:

$2^3\times 5^1\times {\mathrm{683}}^1\times {\mathrm{3221}}^1$

素因数の和:3915

約数の個数: 32

約数和(自身を含む): 198346320

約数和(自身を除く): 110348600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 683, 1366, 2732, 3221, 3415, 5464, 6442, 6830, 12884, 13660, 16105, 25768, 27320, 32210, 64420, 128840, 2199943, 4399886, 8799772, 10999715, 17599544, 21999430, 43998860, 87997720]

約数ペア:

[(1, 87997720), (2, 43998860), (4, 21999430), (5, 17599544), (8, 10999715), (10, 8799772), (20, 4399886), (40, 2199943), (683, 128840), (1366, 64420), (2732, 32210), (3221, 27320), (3415, 25768), (5464, 16105), (6442, 13660), (6830, 12884)]