80209720

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{173}}^2$

素因数の和:424

約数の個数: 48

約数和(自身を含む): 184230360

約数和(自身を除く): 104020640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 173, 268, 335, 346, 536, 670, 692, 865, 1340, 1384, 1730, 2680, 3460, 6920, 11591, 23182, 29929, 46364, 57955, 59858, 92728, 115910, 119716, 149645, 231820, 239432, 299290, 463640, 598580, 1197160, 2005243, 4010486, 8020972, 10026215, 16041944, 20052430, 40104860, 80209720]

約数ペア:

[(1, 80209720), (2, 40104860), (4, 20052430), (5, 16041944), (8, 10026215), (10, 8020972), (20, 4010486), (40, 2005243), (67, 1197160), (134, 598580), (173, 463640), (268, 299290), (335, 239432), (346, 231820), (536, 149645), (670, 119716), (692, 115910), (865, 92728), (1340, 59858), (1384, 57955), (1730, 46364), (2680, 29929), (3460, 23182), (6920, 11591)]