81285820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{52783}}^1$

素因数の和:52810

約数の個数: 48

約数和(自身を含む): 212825088

約数和(自身を除く): 131539268

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 52783, 105566, 211132, 263915, 369481, 527830, 580613, 738962, 1055660, 1161226, 1477924, 1847405, 2322452, 2903065, 3694810, 4064291, 5806130, 7389620, 8128582, 11612260, 16257164, 20321455, 40642910, 81285820]

約数ペア:

[(1, 81285820), (2, 40642910), (4, 20321455), (5, 16257164), (7, 11612260), (10, 8128582), (11, 7389620), (14, 5806130), (20, 4064291), (22, 3694810), (28, 2903065), (35, 2322452), (44, 1847405), (55, 1477924), (70, 1161226), (77, 1055660), (110, 738962), (140, 580613), (154, 527830), (220, 369481), (308, 263915), (385, 211132), (770, 105566), (1540, 52783)]