720065780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{17921}}^1$

素因数の和:17985

約数の個数: 72

約数和(自身を含む): 1802021256

約数和(自身を除く): 1081955476

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 49, 70, 82, 98, 140, 164, 196, 205, 245, 287, 410, 490, 574, 820, 980, 1148, 1435, 2009, 2870, 4018, 5740, 8036, 10045, 17921, 20090, 35842, 40180, 71684, 89605, 125447, 179210, 250894, 358420, 501788, 627235, 734761, 878129, 1254470, 1469522, 1756258, 2508940, 2939044, 3512516, 3673805, 4390645, 5143327, 7347610, 8781290, 10286654, 14695220, 17562580, 20573308, 25716635, 36003289, 51433270, 72006578, 102866540, 144013156, 180016445, 360032890, 720065780]

約数ペア:

[(1, 720065780), (2, 360032890), (4, 180016445), (5, 144013156), (7, 102866540), (10, 72006578), (14, 51433270), (20, 36003289), (28, 25716635), (35, 20573308), (41, 17562580), (49, 14695220), (70, 10286654), (82, 8781290), (98, 7347610), (140, 5143327), (164, 4390645), (196, 3673805), (205, 3512516), (245, 2939044), (287, 2508940), (410, 1756258), (490, 1469522), (574, 1254470), (820, 878129), (980, 734761), (1148, 627235), (1435, 501788), (2009, 358420), (2870, 250894), (4018, 179210), (5740, 125447), (8036, 89605), (10045, 71684), (17921, 40180), (20090, 35842)]