81475660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{25303}}^1$

素因数の和:25342

約数の個数: 48

約数和(自身を含む): 204051456

約数和(自身を除く): 122575796

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 25303, 50606, 101212, 126515, 177121, 253030, 354242, 506060, 581969, 708484, 885605, 1163938, 1771210, 2327876, 2909845, 3542420, 4073783, 5819690, 8147566, 11639380, 16295132, 20368915, 40737830, 81475660]

約数ペア:

[(1, 81475660), (2, 40737830), (4, 20368915), (5, 16295132), (7, 11639380), (10, 8147566), (14, 5819690), (20, 4073783), (23, 3542420), (28, 2909845), (35, 2327876), (46, 1771210), (70, 1163938), (92, 885605), (115, 708484), (140, 581969), (161, 506060), (230, 354242), (322, 253030), (460, 177121), (644, 126515), (805, 101212), (1610, 50606), (3220, 25303)]