81463340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{1871}}^1$

素因数の和:2198

約数の個数: 48

約数和(自身を含む): 196245504

約数和(自身を除く): 114782164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 311, 622, 1244, 1555, 1871, 2177, 3110, 3742, 4354, 6220, 7484, 8708, 9355, 10885, 13097, 18710, 21770, 26194, 37420, 43540, 52388, 65485, 130970, 261940, 581881, 1163762, 2327524, 2909405, 4073167, 5818810, 8146334, 11637620, 16292668, 20365835, 40731670, 81463340]

約数ペア:

[(1, 81463340), (2, 40731670), (4, 20365835), (5, 16292668), (7, 11637620), (10, 8146334), (14, 5818810), (20, 4073167), (28, 2909405), (35, 2327524), (70, 1163762), (140, 581881), (311, 261940), (622, 130970), (1244, 65485), (1555, 52388), (1871, 43540), (2177, 37420), (3110, 26194), (3742, 21770), (4354, 18710), (6220, 13097), (7484, 10885), (8708, 9355)]