18533840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:348

約数の個数: 80

約数和(自身を含む): 47246976

約数和(自身を除く): 28713136

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 71, 80, 104, 130, 142, 208, 251, 260, 284, 355, 502, 520, 568, 710, 923, 1004, 1040, 1136, 1255, 1420, 1846, 2008, 2510, 2840, 3263, 3692, 4016, 4615, 5020, 5680, 6526, 7384, 9230, 10040, 13052, 14768, 16315, 17821, 18460, 20080, 26104, 32630, 35642, 36920, 52208, 65260, 71284, 73840, 89105, 130520, 142568, 178210, 231673, 261040, 285136, 356420, 463346, 712840, 926692, 1158365, 1425680, 1853384, 2316730, 3706768, 4633460, 9266920, 18533840]

約数ペア:

[(1, 18533840), (2, 9266920), (4, 4633460), (5, 3706768), (8, 2316730), (10, 1853384), (13, 1425680), (16, 1158365), (20, 926692), (26, 712840), (40, 463346), (52, 356420), (65, 285136), (71, 261040), (80, 231673), (104, 178210), (130, 142568), (142, 130520), (208, 89105), (251, 73840), (260, 71284), (284, 65260), (355, 52208), (502, 36920), (520, 35642), (568, 32630), (710, 26104), (923, 20080), (1004, 18460), (1040, 17821), (1136, 16315), (1255, 14768), (1420, 13052), (1846, 10040), (2008, 9230), (2510, 7384), (2840, 6526), (3263, 5680), (3692, 5020), (4016, 4615)]