201905840

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{271}}^1$

素因数の和:490

約数の個数: 80

約数和(自身を含む): 481635840

約数和(自身を除く): 279730000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 139, 268, 271, 278, 335, 536, 542, 556, 670, 695, 1072, 1084, 1112, 1340, 1355, 1390, 2168, 2224, 2680, 2710, 2780, 4336, 5360, 5420, 5560, 9313, 10840, 11120, 18157, 18626, 21680, 36314, 37252, 37669, 46565, 72628, 74504, 75338, 90785, 93130, 145256, 149008, 150676, 181570, 186260, 188345, 290512, 301352, 363140, 372520, 376690, 602704, 726280, 745040, 753380, 1452560, 1506760, 2523823, 3013520, 5047646, 10095292, 12619115, 20190584, 25238230, 40381168, 50476460, 100952920, 201905840]

約数ペア:

[(1, 201905840), (2, 100952920), (4, 50476460), (5, 40381168), (8, 25238230), (10, 20190584), (16, 12619115), (20, 10095292), (40, 5047646), (67, 3013520), (80, 2523823), (134, 1506760), (139, 1452560), (268, 753380), (271, 745040), (278, 726280), (335, 602704), (536, 376690), (542, 372520), (556, 363140), (670, 301352), (695, 290512), (1072, 188345), (1084, 186260), (1112, 181570), (1340, 150676), (1355, 149008), (1390, 145256), (2168, 93130), (2224, 90785), (2680, 75338), (2710, 74504), (2780, 72628), (4336, 46565), (5360, 37669), (5420, 37252), (5560, 36314), (9313, 21680), (10840, 18626), (11120, 18157)]