12479720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{251}}^1$

素因数の和:386

約数の個数: 64

約数和(自身を含む): 31026240

約数和(自身を除く): 18546520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 113, 220, 226, 251, 440, 452, 502, 565, 904, 1004, 1130, 1243, 1255, 2008, 2260, 2486, 2510, 2761, 4520, 4972, 5020, 5522, 6215, 9944, 10040, 11044, 12430, 13805, 22088, 24860, 27610, 28363, 49720, 55220, 56726, 110440, 113452, 141815, 226904, 283630, 311993, 567260, 623986, 1134520, 1247972, 1559965, 2495944, 3119930, 6239860, 12479720]

約数ペア:

[(1, 12479720), (2, 6239860), (4, 3119930), (5, 2495944), (8, 1559965), (10, 1247972), (11, 1134520), (20, 623986), (22, 567260), (40, 311993), (44, 283630), (55, 226904), (88, 141815), (110, 113452), (113, 110440), (220, 56726), (226, 55220), (251, 49720), (440, 28363), (452, 27610), (502, 24860), (565, 22088), (904, 13805), (1004, 12430), (1130, 11044), (1243, 10040), (1255, 9944), (2008, 6215), (2260, 5522), (2486, 5020), (2510, 4972), (2761, 4520)]