21089514901

素因数分解:

$7^1\times {\mathrm{13}}^3\times {\mathrm{47}}^1\times {\mathrm{163}}^1\times {\mathrm{179}}^1$

素因数の和:435

約数の個数: 64

約数和(自身を含む): 26978918400

約数和(自身を除く): 5889403499

約数列:

[1, 7, 13, 47, 91, 163, 169, 179, 329, 611, 1141, 1183, 1253, 2119, 2197, 2327, 4277, 7661, 7943, 8413, 14833, 15379, 16289, 27547, 29177, 30251, 53627, 55601, 58891, 99593, 103259, 109369, 192829, 204239, 211757, 358111, 379301, 393263, 697151, 722813, 765583, 1294709, 1371319, 1421797, 2506777, 2655107, 2752841, 4930913, 9062963, 9599233, 9952579, 16831217, 17827147, 18483361, 34516391, 64101869, 117818519, 124790029, 129383527, 231752911, 448713083, 1622270377, 3012787843, 21089514901]

約数ペア:

[(1, 21089514901), (7, 3012787843), (13, 1622270377), (47, 448713083), (91, 231752911), (163, 129383527), (169, 124790029), (179, 117818519), (329, 64101869), (611, 34516391), (1141, 18483361), (1183, 17827147), (1253, 16831217), (2119, 9952579), (2197, 9599233), (2327, 9062963), (4277, 4930913), (7661, 2752841), (7943, 2655107), (8413, 2506777), (14833, 1421797), (15379, 1371319), (16289, 1294709), (27547, 765583), (29177, 722813), (30251, 697151), (53627, 393263), (55601, 379301), (58891, 358111), (99593, 211757), (103259, 204239), (109369, 192829)]