81687780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{15649}}^1$

素因数の和:15693

約数の個数: 72

約数和(自身を含む): 256347000

約数和(自身を除く): 174659220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 5220, 15649, 31298, 46947, 62596, 78245, 93894, 140841, 156490, 187788, 234735, 281682, 312980, 453821, 469470, 563364, 704205, 907642, 938940, 1361463, 1408410, 1815284, 2269105, 2722926, 2816820, 4084389, 4538210, 5445852, 6807315, 8168778, 9076420, 13614630, 16337556, 20421945, 27229260, 40843890, 81687780]

約数ペア:

[(1, 81687780), (2, 40843890), (3, 27229260), (4, 20421945), (5, 16337556), (6, 13614630), (9, 9076420), (10, 8168778), (12, 6807315), (15, 5445852), (18, 4538210), (20, 4084389), (29, 2816820), (30, 2722926), (36, 2269105), (45, 1815284), (58, 1408410), (60, 1361463), (87, 938940), (90, 907642), (116, 704205), (145, 563364), (174, 469470), (180, 453821), (261, 312980), (290, 281682), (348, 234735), (435, 187788), (522, 156490), (580, 140841), (870, 93894), (1044, 78245), (1305, 62596), (1740, 46947), (2610, 31298), (5220, 15649)]