638049344

素因数分解:

$2^6\times {\mathrm{499}}^1\times {\mathrm{19979}}^1$

素因数の和:20490

約数の個数: 28

約数和(自身を含む): 1268730000

約数和(自身を除く): 630680656

約数列:

[1, 2, 4, 8, 16, 32, 64, 499, 998, 1996, 3992, 7984, 15968, 19979, 31936, 39958, 79916, 159832, 319664, 639328, 1278656, 9969521, 19939042, 39878084, 79756168, 159512336, 319024672, 638049344]

約数ペア:

[(1, 638049344), (2, 319024672), (4, 159512336), (8, 79756168), (16, 39878084), (32, 19939042), (64, 9969521), (499, 1278656), (998, 639328), (1996, 319664), (3992, 159832), (7984, 79916), (15968, 39958), (19979, 31936)]