80616640

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19379}}^1$

素因数の和:19409

約数の個数: 56

約数和(自身を含む): 206745840

約数和(自身を除く): 126129200

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 19379, 38758, 77516, 96895, 155032, 193790, 251927, 310064, 387580, 503854, 620128, 775160, 1007708, 1240256, 1259635, 1550320, 2015416, 2519270, 3100640, 4030832, 5038540, 6201280, 8061664, 10077080, 16123328, 20154160, 40308320, 80616640]

約数ペア:

[(1, 80616640), (2, 40308320), (4, 20154160), (5, 16123328), (8, 10077080), (10, 8061664), (13, 6201280), (16, 5038540), (20, 4030832), (26, 3100640), (32, 2519270), (40, 2015416), (52, 1550320), (64, 1259635), (65, 1240256), (80, 1007708), (104, 775160), (130, 620128), (160, 503854), (208, 387580), (260, 310064), (320, 251927), (416, 193790), (520, 155032), (832, 96895), (1040, 77516), (2080, 38758), (4160, 19379)]