13321520

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1871}}^1$

素因数の和:1973

約数の個数: 40

約数和(自身を含む): 31337280

約数和(自身を除く): 18015760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 1871, 3560, 3742, 7120, 7484, 9355, 14968, 18710, 29936, 37420, 74840, 149680, 166519, 333038, 666076, 832595, 1332152, 1665190, 2664304, 3330380, 6660760, 13321520]

約数ペア:

[(1, 13321520), (2, 6660760), (4, 3330380), (5, 2664304), (8, 1665190), (10, 1332152), (16, 832595), (20, 666076), (40, 333038), (80, 166519), (89, 149680), (178, 74840), (356, 37420), (445, 29936), (712, 18710), (890, 14968), (1424, 9355), (1780, 7484), (1871, 7120), (3560, 3742)]