397339740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{315349}}^1$

素因数の和:315371

約数の個数: 72

約数和(自身を含む): 1377448800

約数和(自身を除く): 980109060

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, 630, 1260, 315349, 630698, 946047, 1261396, 1576745, 1892094, 2207443, 2838141, 3153490, 3784188, 4414886, 4730235, 5676282, 6306980, 6622329, 8829772, 9460470, 11037215, 11352564, 13244658, 14190705, 18920940, 19866987, 22074430, 26489316, 28381410, 33111645, 39733974, 44148860, 56762820, 66223290, 79467948, 99334935, 132446580, 198669870, 397339740]

約数ペア:

[(1, 397339740), (2, 198669870), (3, 132446580), (4, 99334935), (5, 79467948), (6, 66223290), (7, 56762820), (9, 44148860), (10, 39733974), (12, 33111645), (14, 28381410), (15, 26489316), (18, 22074430), (20, 19866987), (21, 18920940), (28, 14190705), (30, 13244658), (35, 11352564), (36, 11037215), (42, 9460470), (45, 8829772), (60, 6622329), (63, 6306980), (70, 5676282), (84, 4730235), (90, 4414886), (105, 3784188), (126, 3153490), (140, 2838141), (180, 2207443), (210, 1892094), (252, 1576745), (315, 1261396), (420, 946047), (630, 630698), (1260, 315349)]