1277390080

素因数分解:

$2^8\times 5^1\times {\mathrm{997961}}^1$

素因数の和:997982

約数の個数: 36

約数和(自身を含む): 3059751492

約数和(自身を除く): 1782361412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 997961, 1995922, 3991844, 4989805, 7983688, 9979610, 15967376, 19959220, 31934752, 39918440, 63869504, 79836880, 127739008, 159673760, 255478016, 319347520, 638695040, 1277390080]

約数ペア:

[(1, 1277390080), (2, 638695040), (4, 319347520), (5, 255478016), (8, 159673760), (10, 127739008), (16, 79836880), (20, 63869504), (32, 39918440), (40, 31934752), (64, 19959220), (80, 15967376), (128, 9979610), (160, 7983688), (256, 4989805), (320, 3991844), (640, 1995922), (1280, 997961)]