661712660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{6961}}^1$

素因数の和:7081

約数の個数: 72

約数和(自身を含む): 1633368744

約数和(自身を除く): 971656084

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 97, 98, 140, 194, 196, 245, 388, 485, 490, 679, 970, 980, 1358, 1940, 2716, 3395, 4753, 6790, 6961, 9506, 13580, 13922, 19012, 23765, 27844, 34805, 47530, 48727, 69610, 95060, 97454, 139220, 194908, 243635, 341089, 487270, 675217, 682178, 974540, 1350434, 1364356, 1705445, 2700868, 3376085, 3410890, 4726519, 6752170, 6821780, 9453038, 13504340, 18906076, 23632595, 33085633, 47265190, 66171266, 94530380, 132342532, 165428165, 330856330, 661712660]

約数ペア:

[(1, 661712660), (2, 330856330), (4, 165428165), (5, 132342532), (7, 94530380), (10, 66171266), (14, 47265190), (20, 33085633), (28, 23632595), (35, 18906076), (49, 13504340), (70, 9453038), (97, 6821780), (98, 6752170), (140, 4726519), (194, 3410890), (196, 3376085), (245, 2700868), (388, 1705445), (485, 1364356), (490, 1350434), (679, 974540), (970, 682178), (980, 675217), (1358, 487270), (1940, 341089), (2716, 243635), (3395, 194908), (4753, 139220), (6790, 97454), (6961, 95060), (9506, 69610), (13580, 48727), (13922, 47530), (19012, 34805), (23765, 27844)]