208481870

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{241}}^1$

素因数の和:453

約数の個数: 64

約数和(自身を含む): 412948800

約数和(自身を除く): 204466930

約数列:

[1, 2, 5, 10, 19, 29, 38, 58, 95, 145, 157, 190, 241, 290, 314, 482, 551, 785, 1102, 1205, 1570, 2410, 2755, 2983, 4553, 4579, 5510, 5966, 6989, 9106, 9158, 13978, 14915, 22765, 22895, 29830, 34945, 37837, 45530, 45790, 69890, 75674, 86507, 132791, 173014, 189185, 265582, 378370, 432535, 663955, 718903, 865070, 1097273, 1327910, 1437806, 2194546, 3594515, 5486365, 7189030, 10972730, 20848187, 41696374, 104240935, 208481870]

約数ペア:

[(1, 208481870), (2, 104240935), (5, 41696374), (10, 20848187), (19, 10972730), (29, 7189030), (38, 5486365), (58, 3594515), (95, 2194546), (145, 1437806), (157, 1327910), (190, 1097273), (241, 865070), (290, 718903), (314, 663955), (482, 432535), (551, 378370), (785, 265582), (1102, 189185), (1205, 173014), (1570, 132791), (2410, 86507), (2755, 75674), (2983, 69890), (4553, 45790), (4579, 45530), (5510, 37837), (5966, 34945), (6989, 29830), (9106, 22895), (9158, 22765), (13978, 14915)]