20185581668

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{65651}}^1$

素因数の和:65880

約数の個数: 48

約数和(自身を含む): 41176934400

約数和(自身を除く): 20991352732

約数列:

[1, 2, 4, 7, 14, 28, 79, 139, 158, 278, 316, 553, 556, 973, 1106, 1946, 2212, 3892, 10981, 21962, 43924, 65651, 76867, 131302, 153734, 262604, 307468, 459557, 919114, 1838228, 5186429, 9125489, 10372858, 18250978, 20745716, 36305003, 36501956, 63878423, 72610006, 127756846, 145220012, 255513692, 720913631, 1441827262, 2883654524, 5046395417, 10092790834, 20185581668]

約数ペア:

[(1, 20185581668), (2, 10092790834), (4, 5046395417), (7, 2883654524), (14, 1441827262), (28, 720913631), (79, 255513692), (139, 145220012), (158, 127756846), (278, 72610006), (316, 63878423), (553, 36501956), (556, 36305003), (973, 20745716), (1106, 18250978), (1946, 10372858), (2212, 9125489), (3892, 5186429), (10981, 1838228), (21962, 919114), (43924, 459557), (65651, 307468), (76867, 262604), (131302, 153734)]