28284711

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{41}}^1$

素因数の和:109

約数の個数: 72

約数和(自身を含む): 51078384

約数和(自身を除く): 22793673

約数列:

[1, 3, 7, 13, 19, 21, 39, 41, 49, 57, 91, 123, 133, 147, 247, 273, 287, 361, 399, 533, 637, 741, 779, 861, 931, 1083, 1599, 1729, 1911, 2009, 2337, 2527, 2793, 3731, 4693, 5187, 5453, 6027, 7581, 10127, 11193, 12103, 14079, 14801, 16359, 17689, 26117, 30381, 32851, 36309, 38171, 44403, 53067, 70889, 78351, 98553, 103607, 114513, 192413, 212667, 229957, 310821, 496223, 577239, 689871, 725249, 1346891, 1488669, 2175747, 4040673, 9428237, 28284711]

約数ペア:

[(1, 28284711), (3, 9428237), (7, 4040673), (13, 2175747), (19, 1488669), (21, 1346891), (39, 725249), (41, 689871), (49, 577239), (57, 496223), (91, 310821), (123, 229957), (133, 212667), (147, 192413), (247, 114513), (273, 103607), (287, 98553), (361, 78351), (399, 70889), (533, 53067), (637, 44403), (741, 38171), (779, 36309), (861, 32851), (931, 30381), (1083, 26117), (1599, 17689), (1729, 16359), (1911, 14801), (2009, 14079), (2337, 12103), (2527, 11193), (2793, 10127), (3731, 7581), (4693, 6027), (5187, 5453)]