28745409

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{613}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 50397120

約数和(自身を除く): 21651711

約数列:

[1, 3, 7, 11, 21, 29, 33, 49, 77, 87, 147, 203, 231, 319, 539, 609, 613, 957, 1421, 1617, 1839, 2233, 4263, 4291, 6699, 6743, 12873, 15631, 17777, 20229, 30037, 46893, 47201, 53331, 90111, 124439, 141603, 195547, 330407, 373317, 586641, 871073, 991221, 1368829, 2613219, 4106487, 9581803, 28745409]

約数ペア:

[(1, 28745409), (3, 9581803), (7, 4106487), (11, 2613219), (21, 1368829), (29, 991221), (33, 871073), (49, 586641), (77, 373317), (87, 330407), (147, 195547), (203, 141603), (231, 124439), (319, 90111), (539, 53331), (609, 47201), (613, 46893), (957, 30037), (1421, 20229), (1617, 17777), (1839, 15631), (2233, 12873), (4263, 6743), (4291, 6699)]