243215721

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1\times {\mathrm{557}}^1$

素因数の和:838

約数の個数: 48

約数和(自身を含む): 417830400

約数和(自身を除く): 174614679

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 239, 261, 557, 609, 717, 1671, 1673, 1827, 2151, 3899, 5013, 5019, 6931, 11697, 15057, 16153, 20793, 35091, 48459, 48517, 62379, 113071, 133123, 145377, 145551, 339213, 399369, 436653, 931861, 1017639, 1198107, 2795583, 3860567, 8386749, 11581701, 27023969, 34745103, 81071907, 243215721]

約数ペア:

[(1, 243215721), (3, 81071907), (7, 34745103), (9, 27023969), (21, 11581701), (29, 8386749), (63, 3860567), (87, 2795583), (203, 1198107), (239, 1017639), (261, 931861), (557, 436653), (609, 399369), (717, 339213), (1671, 145551), (1673, 145377), (1827, 133123), (2151, 113071), (3899, 62379), (5013, 48517), (5019, 48459), (6931, 35091), (11697, 20793), (15057, 16153)]