21081744

素因数分解:

$2^4\times 3^2\times {\mathrm{281}}^1\times {\mathrm{521}}^1$

素因数の和:816

約数の個数: 60

約数和(自身を含む): 59323212

約数和(自身を除く): 38241468

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 281, 521, 562, 843, 1042, 1124, 1563, 1686, 2084, 2248, 2529, 3126, 3372, 4168, 4496, 4689, 5058, 6252, 6744, 8336, 9378, 10116, 12504, 13488, 18756, 20232, 25008, 37512, 40464, 75024, 146401, 292802, 439203, 585604, 878406, 1171208, 1317609, 1756812, 2342416, 2635218, 3513624, 5270436, 7027248, 10540872, 21081744]

約数ペア:

[(1, 21081744), (2, 10540872), (3, 7027248), (4, 5270436), (6, 3513624), (8, 2635218), (9, 2342416), (12, 1756812), (16, 1317609), (18, 1171208), (24, 878406), (36, 585604), (48, 439203), (72, 292802), (144, 146401), (281, 75024), (521, 40464), (562, 37512), (843, 25008), (1042, 20232), (1124, 18756), (1563, 13488), (1686, 12504), (2084, 10116), (2248, 9378), (2529, 8336), (3126, 6744), (3372, 6252), (4168, 5058), (4496, 4689)]