280999300

素因数分解:

$2^2\times 5^2\times {\mathrm{59}}^1\times {\mathrm{97}}^1\times {\mathrm{491}}^1$

素因数の和:661

約数の個数: 72

約数和(自身を含む): 627772320

約数和(自身を除く): 346773020

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 59, 97, 100, 118, 194, 236, 295, 388, 485, 491, 590, 970, 982, 1180, 1475, 1940, 1964, 2425, 2455, 2950, 4850, 4910, 5723, 5900, 9700, 9820, 11446, 12275, 22892, 24550, 28615, 28969, 47627, 49100, 57230, 57938, 95254, 114460, 115876, 143075, 144845, 190508, 238135, 286150, 289690, 476270, 572300, 579380, 724225, 952540, 1190675, 1448450, 2381350, 2809993, 2896900, 4762700, 5619986, 11239972, 14049965, 28099930, 56199860, 70249825, 140499650, 280999300]

約数ペア:

[(1, 280999300), (2, 140499650), (4, 70249825), (5, 56199860), (10, 28099930), (20, 14049965), (25, 11239972), (50, 5619986), (59, 4762700), (97, 2896900), (100, 2809993), (118, 2381350), (194, 1448450), (236, 1190675), (295, 952540), (388, 724225), (485, 579380), (491, 572300), (590, 476270), (970, 289690), (982, 286150), (1180, 238135), (1475, 190508), (1940, 144845), (1964, 143075), (2425, 115876), (2455, 114460), (2950, 95254), (4850, 57938), (4910, 57230), (5723, 49100), (5900, 47627), (9700, 28969), (9820, 28615), (11446, 24550), (12275, 22892)]