641886

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:89

約数の個数: 64

約数和(自身を含む): 1658880

約数和(自身を除く): 1016994

約数列:

[1, 2, 3, 6, 7, 14, 17, 21, 29, 31, 34, 42, 51, 58, 62, 87, 93, 102, 119, 174, 186, 203, 217, 238, 357, 406, 434, 493, 527, 609, 651, 714, 899, 986, 1054, 1218, 1302, 1479, 1581, 1798, 2697, 2958, 3162, 3451, 3689, 5394, 6293, 6902, 7378, 10353, 11067, 12586, 15283, 18879, 20706, 22134, 30566, 37758, 45849, 91698, 106981, 213962, 320943, 641886]

約数ペア:

[(1, 641886), (2, 320943), (3, 213962), (6, 106981), (7, 91698), (14, 45849), (17, 37758), (21, 30566), (29, 22134), (31, 20706), (34, 18879), (42, 15283), (51, 12586), (58, 11067), (62, 10353), (87, 7378), (93, 6902), (102, 6293), (119, 5394), (174, 3689), (186, 3451), (203, 3162), (217, 2958), (238, 2697), (357, 1798), (406, 1581), (434, 1479), (493, 1302), (527, 1218), (609, 1054), (651, 986), (714, 899)]