217635460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{1621}}^1$

素因数の和:1781

約数の個数: 72

約数和(自身を含む): 535863384

約数和(自身を除く): 318227924

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 137, 140, 196, 245, 274, 490, 548, 685, 959, 980, 1370, 1621, 1918, 2740, 3242, 3836, 4795, 6484, 6713, 8105, 9590, 11347, 13426, 16210, 19180, 22694, 26852, 32420, 33565, 45388, 56735, 67130, 79429, 113470, 134260, 158858, 222077, 226940, 317716, 397145, 444154, 794290, 888308, 1110385, 1554539, 1588580, 2220770, 3109078, 4441540, 6218156, 7772695, 10881773, 15545390, 21763546, 31090780, 43527092, 54408865, 108817730, 217635460]

約数ペア:

[(1, 217635460), (2, 108817730), (4, 54408865), (5, 43527092), (7, 31090780), (10, 21763546), (14, 15545390), (20, 10881773), (28, 7772695), (35, 6218156), (49, 4441540), (70, 3109078), (98, 2220770), (137, 1588580), (140, 1554539), (196, 1110385), (245, 888308), (274, 794290), (490, 444154), (548, 397145), (685, 317716), (959, 226940), (980, 222077), (1370, 158858), (1621, 134260), (1918, 113470), (2740, 79429), (3242, 67130), (3836, 56735), (4795, 45388), (6484, 33565), (6713, 32420), (8105, 26852), (9590, 22694), (11347, 19180), (13426, 16210)]