31847660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{353}}^1$

素因数の和:722

約数の個数: 48

約数和(自身を含む): 72436896

約数和(自身を除く): 40589236

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 347, 353, 694, 706, 1388, 1412, 1735, 1765, 3470, 3530, 4511, 4589, 6940, 7060, 9022, 9178, 18044, 18356, 22555, 22945, 45110, 45890, 90220, 91780, 122491, 244982, 489964, 612455, 1224910, 1592383, 2449820, 3184766, 6369532, 7961915, 15923830, 31847660]

約数ペア:

[(1, 31847660), (2, 15923830), (4, 7961915), (5, 6369532), (10, 3184766), (13, 2449820), (20, 1592383), (26, 1224910), (52, 612455), (65, 489964), (130, 244982), (260, 122491), (347, 91780), (353, 90220), (694, 45890), (706, 45110), (1388, 22945), (1412, 22555), (1735, 18356), (1765, 18044), (3470, 9178), (3530, 9022), (4511, 7060), (4589, 6940)]