128998940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{3671}}^1$

素因数の和:3938

約数の個数: 48

約数和(自身を含む): 310915584

約数和(自身を除く): 181916644

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 251, 502, 1004, 1255, 1757, 2510, 3514, 3671, 5020, 7028, 7342, 8785, 14684, 17570, 18355, 25697, 35140, 36710, 51394, 73420, 102788, 128485, 256970, 513940, 921421, 1842842, 3685684, 4607105, 6449947, 9214210, 12899894, 18428420, 25799788, 32249735, 64499470, 128998940]

約数ペア:

[(1, 128998940), (2, 64499470), (4, 32249735), (5, 25799788), (7, 18428420), (10, 12899894), (14, 9214210), (20, 6449947), (28, 4607105), (35, 3685684), (70, 1842842), (140, 921421), (251, 513940), (502, 256970), (1004, 128485), (1255, 102788), (1757, 73420), (2510, 51394), (3514, 36710), (3671, 35140), (5020, 25697), (7028, 18355), (7342, 17570), (8785, 14684)]