19998973960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{4933}}^1\times {\mathrm{14479}}^1$

素因数の和:19430

約数の個数: 64

約数和(自身を含む): 51439910400

約数和(自身を除く): 31440936440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 4933, 9866, 14479, 19732, 24665, 28958, 34531, 39464, 49330, 57916, 69062, 72395, 98660, 101353, 115832, 138124, 144790, 172655, 197320, 202706, 276248, 289580, 345310, 405412, 506765, 579160, 690620, 810824, 1013530, 1381240, 2027060, 4054120, 71424907, 142849814, 285699628, 357124535, 499974349, 571399256, 714249070, 999948698, 1428498140, 1999897396, 2499871745, 2856996280, 3999794792, 4999743490, 9999486980, 19998973960]

約数ペア:

[(1, 19998973960), (2, 9999486980), (4, 4999743490), (5, 3999794792), (7, 2856996280), (8, 2499871745), (10, 1999897396), (14, 1428498140), (20, 999948698), (28, 714249070), (35, 571399256), (40, 499974349), (56, 357124535), (70, 285699628), (140, 142849814), (280, 71424907), (4933, 4054120), (9866, 2027060), (14479, 1381240), (19732, 1013530), (24665, 810824), (28958, 690620), (34531, 579160), (39464, 506765), (49330, 405412), (57916, 345310), (69062, 289580), (72395, 276248), (98660, 202706), (101353, 197320), (115832, 172655), (138124, 144790)]