21000307060

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1992439}}^1$

素因数の和:1992496

約数の個数: 48

約数和(自身を含む): 48201108480

約数和(自身を除く): 27200801420

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 124, 155, 170, 310, 340, 527, 620, 1054, 2108, 2635, 5270, 10540, 1992439, 3984878, 7969756, 9962195, 19924390, 33871463, 39848780, 61765609, 67742926, 123531218, 135485852, 169357315, 247062436, 308828045, 338714630, 617656090, 677429260, 1050015353, 1235312180, 2100030706, 4200061412, 5250076765, 10500153530, 21000307060]

約数ペア:

[(1, 21000307060), (2, 10500153530), (4, 5250076765), (5, 4200061412), (10, 2100030706), (17, 1235312180), (20, 1050015353), (31, 677429260), (34, 617656090), (62, 338714630), (68, 308828045), (85, 247062436), (124, 169357315), (155, 135485852), (170, 123531218), (310, 67742926), (340, 61765609), (527, 39848780), (620, 33871463), (1054, 19924390), (2108, 9962195), (2635, 7969756), (5270, 3984878), (10540, 1992439)]