81556045

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 106168320

約数和(自身を除く): 24612275

約数列:

[1, 5, 23, 47, 79, 115, 191, 235, 395, 955, 1081, 1817, 3713, 4393, 5405, 8977, 9085, 15089, 18565, 21965, 44885, 75445, 85399, 206471, 347047, 426995, 709183, 1032355, 1735235, 3545915, 16311209, 81556045]

約数ペア:

[(1, 81556045), (5, 16311209), (23, 3545915), (47, 1735235), (79, 1032355), (115, 709183), (191, 426995), (235, 347047), (395, 206471), (955, 85399), (1081, 75445), (1817, 44885), (3713, 21965), (4393, 18565), (5405, 15089), (8977, 9085)]