656460

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{521}}^1$

素因数の和:543

約数の個数: 72

約数和(自身を含む): 2280096

約数和(自身を除く): 1623636

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 521, 630, 1042, 1260, 1563, 2084, 2605, 3126, 3647, 4689, 5210, 6252, 7294, 7815, 9378, 10420, 10941, 14588, 15630, 18235, 18756, 21882, 23445, 31260, 32823, 36470, 43764, 46890, 54705, 65646, 72940, 93780, 109410, 131292, 164115, 218820, 328230, 656460]

約数ペア:

[(1, 656460), (2, 328230), (3, 218820), (4, 164115), (5, 131292), (6, 109410), (7, 93780), (9, 72940), (10, 65646), (12, 54705), (14, 46890), (15, 43764), (18, 36470), (20, 32823), (21, 31260), (28, 23445), (30, 21882), (35, 18756), (36, 18235), (42, 15630), (45, 14588), (60, 10941), (63, 10420), (70, 9378), (84, 7815), (90, 7294), (105, 6252), (126, 5210), (140, 4689), (180, 3647), (210, 3126), (252, 2605), (315, 2084), (420, 1563), (521, 1260), (630, 1042)]