19950645

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:234

約数の個数: 64

約数和(自身を含む): 38320128

約数和(自身を除く): 18369483

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 71, 131, 143, 165, 195, 213, 355, 393, 429, 655, 715, 781, 923, 1065, 1441, 1703, 1965, 2145, 2343, 2769, 3905, 4323, 4615, 5109, 7205, 8515, 9301, 10153, 11715, 13845, 18733, 21615, 25545, 27903, 30459, 46505, 50765, 56199, 93665, 102311, 120913, 139515, 152295, 280995, 306933, 362739, 511555, 604565, 1330043, 1534665, 1813695, 3990129, 6650215, 19950645]

約数ペア:

[(1, 19950645), (3, 6650215), (5, 3990129), (11, 1813695), (13, 1534665), (15, 1330043), (33, 604565), (39, 511555), (55, 362739), (65, 306933), (71, 280995), (131, 152295), (143, 139515), (165, 120913), (195, 102311), (213, 93665), (355, 56199), (393, 50765), (429, 46505), (655, 30459), (715, 27903), (781, 25545), (923, 21615), (1065, 18733), (1441, 13845), (1703, 11715), (1965, 10153), (2145, 9301), (2343, 8515), (2769, 7205), (3905, 5109), (4323, 4615)]