65559980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{337}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 141051456

約数和(自身を除く): 75491476

約数列:

[1, 2, 4, 5, 10, 20, 71, 137, 142, 274, 284, 337, 355, 548, 674, 685, 710, 1348, 1370, 1420, 1685, 2740, 3370, 6740, 9727, 19454, 23927, 38908, 46169, 47854, 48635, 92338, 95708, 97270, 119635, 184676, 194540, 230845, 239270, 461690, 478540, 923380, 3277999, 6555998, 13111996, 16389995, 32779990, 65559980]

約数ペア:

[(1, 65559980), (2, 32779990), (4, 16389995), (5, 13111996), (10, 6555998), (20, 3277999), (71, 923380), (137, 478540), (142, 461690), (274, 239270), (284, 230845), (337, 194540), (355, 184676), (548, 119635), (674, 97270), (685, 95708), (710, 92338), (1348, 48635), (1370, 47854), (1420, 46169), (1685, 38908), (2740, 23927), (3370, 19454), (6740, 9727)]