81778372

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{523}}^1$

素因数の和:668

約数の個数: 48

約数和(自身を含む): 161039872

約数和(自身を除く): 79261500

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 97, 124, 194, 388, 403, 523, 806, 1046, 1261, 1612, 2092, 2522, 3007, 5044, 6014, 6799, 12028, 13598, 16213, 27196, 32426, 39091, 50731, 64852, 78182, 101462, 156364, 202924, 210769, 421538, 659503, 843076, 1319006, 1572661, 2638012, 3145322, 6290644, 20444593, 40889186, 81778372]

約数ペア:

[(1, 81778372), (2, 40889186), (4, 20444593), (13, 6290644), (26, 3145322), (31, 2638012), (52, 1572661), (62, 1319006), (97, 843076), (124, 659503), (194, 421538), (388, 210769), (403, 202924), (523, 156364), (806, 101462), (1046, 78182), (1261, 64852), (1612, 50731), (2092, 39091), (2522, 32426), (3007, 27196), (5044, 16213), (6014, 13598), (6799, 12028)]