20425617836

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{211}}^1\times {\mathrm{1609}}^1$

素因数の和:1939

約数の個数: 72

約数和(自身を含む): 39350782800

約数和(自身を除く): 18925164964

約数列:

[1, 2, 4, 13, 26, 52, 89, 169, 178, 211, 338, 356, 422, 676, 844, 1157, 1609, 2314, 2743, 3218, 4628, 5486, 6436, 10972, 15041, 18779, 20917, 30082, 35659, 37558, 41834, 60164, 71318, 75116, 83668, 142636, 143201, 244127, 271921, 286402, 339499, 488254, 543842, 572804, 678998, 976508, 1087684, 1357996, 1861613, 3173651, 3723226, 4413487, 6347302, 7446452, 8826974, 12694604, 17653948, 24200969, 30215411, 48401938, 57375331, 60430822, 96803876, 114750662, 120861644, 229501324, 392800343, 785600686, 1571201372, 5106404459, 10212808918, 20425617836]

約数ペア:

[(1, 20425617836), (2, 10212808918), (4, 5106404459), (13, 1571201372), (26, 785600686), (52, 392800343), (89, 229501324), (169, 120861644), (178, 114750662), (211, 96803876), (338, 60430822), (356, 57375331), (422, 48401938), (676, 30215411), (844, 24200969), (1157, 17653948), (1609, 12694604), (2314, 8826974), (2743, 7446452), (3218, 6347302), (4628, 4413487), (5486, 3723226), (6436, 3173651), (10972, 1861613), (15041, 1357996), (18779, 1087684), (20917, 976508), (30082, 678998), (35659, 572804), (37558, 543842), (41834, 488254), (60164, 339499), (71318, 286402), (75116, 271921), (83668, 244127), (142636, 143201)]