20937480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1171}}^1$

素因数の和:1334

約数の個数: 64

約数和(自身を含む): 63288000

約数和(自身を除く): 42350520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 149, 298, 447, 596, 745, 894, 1171, 1192, 1490, 1788, 2235, 2342, 2980, 3513, 3576, 4470, 4684, 5855, 5960, 7026, 8940, 9368, 11710, 14052, 17565, 17880, 23420, 28104, 35130, 46840, 70260, 140520, 174479, 348958, 523437, 697916, 872395, 1046874, 1395832, 1744790, 2093748, 2617185, 3489580, 4187496, 5234370, 6979160, 10468740, 20937480]

約数ペア:

[(1, 20937480), (2, 10468740), (3, 6979160), (4, 5234370), (5, 4187496), (6, 3489580), (8, 2617185), (10, 2093748), (12, 1744790), (15, 1395832), (20, 1046874), (24, 872395), (30, 697916), (40, 523437), (60, 348958), (120, 174479), (149, 140520), (298, 70260), (447, 46840), (596, 35130), (745, 28104), (894, 23420), (1171, 17880), (1192, 17565), (1490, 14052), (1788, 11710), (2235, 9368), (2342, 8940), (2980, 7026), (3513, 5960), (3576, 5855), (4470, 4684)]