1640989940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{166429}}^1$

素因数の和:166484

約数の個数: 48

約数和(自身を含む): 3774632400

約数和(自身を除く): 2133642460

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 85, 116, 145, 170, 290, 340, 493, 580, 986, 1972, 2465, 4930, 9860, 166429, 332858, 665716, 832145, 1664290, 2829293, 3328580, 4826441, 5658586, 9652882, 11317172, 14146465, 19305764, 24132205, 28292930, 48264410, 56585860, 82049497, 96528820, 164098994, 328197988, 410247485, 820494970, 1640989940]

約数ペア:

[(1, 1640989940), (2, 820494970), (4, 410247485), (5, 328197988), (10, 164098994), (17, 96528820), (20, 82049497), (29, 56585860), (34, 48264410), (58, 28292930), (68, 24132205), (85, 19305764), (116, 14146465), (145, 11317172), (170, 9652882), (290, 5658586), (340, 4826441), (493, 3328580), (580, 2829293), (986, 1664290), (1972, 832145), (2465, 665716), (4930, 332858), (9860, 166429)]