21131605390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{263191}}^1$

素因数の和:263273

約数の個数: 64

約数和(自身を含む): 46085971968

約数和(自身を除く): 24954366578

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 37, 62, 70, 74, 155, 185, 217, 259, 310, 370, 434, 518, 1085, 1147, 1295, 2170, 2294, 2590, 5735, 8029, 11470, 16058, 40145, 80290, 263191, 526382, 1315955, 1842337, 2631910, 3684674, 8158921, 9211685, 9738067, 16317842, 18423370, 19476134, 40794605, 48690335, 57112447, 68166469, 81589210, 97380670, 114224894, 136332938, 285562235, 301880077, 340832345, 571124470, 603760154, 681664690, 1509400385, 2113160539, 3018800770, 4226321078, 10565802695, 21131605390]

約数ペア:

[(1, 21131605390), (2, 10565802695), (5, 4226321078), (7, 3018800770), (10, 2113160539), (14, 1509400385), (31, 681664690), (35, 603760154), (37, 571124470), (62, 340832345), (70, 301880077), (74, 285562235), (155, 136332938), (185, 114224894), (217, 97380670), (259, 81589210), (310, 68166469), (370, 57112447), (434, 48690335), (518, 40794605), (1085, 19476134), (1147, 18423370), (1295, 16317842), (2170, 9738067), (2294, 9211685), (2590, 8158921), (5735, 3684674), (8029, 2631910), (11470, 1842337), (16058, 1315955), (40145, 526382), (80290, 263191)]