209718580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1\times {\mathrm{853}}^1$

素因数の和:1528

約数の個数: 48

約数和(自身を含む): 464849280

約数和(自身を除く): 255130700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 647, 853, 1294, 1706, 2588, 3235, 3412, 4265, 6470, 8530, 12293, 12940, 16207, 17060, 24586, 32414, 49172, 61465, 64828, 81035, 122930, 162070, 245860, 324140, 551891, 1103782, 2207564, 2759455, 5518910, 10485929, 11037820, 20971858, 41943716, 52429645, 104859290, 209718580]

約数ペア:

[(1, 209718580), (2, 104859290), (4, 52429645), (5, 41943716), (10, 20971858), (19, 11037820), (20, 10485929), (38, 5518910), (76, 2759455), (95, 2207564), (190, 1103782), (380, 551891), (647, 324140), (853, 245860), (1294, 162070), (1706, 122930), (2588, 81035), (3235, 64828), (3412, 61465), (4265, 49172), (6470, 32414), (8530, 24586), (12293, 17060), (12940, 16207)]