20358261

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1013}}^1$

素因数の和:1066

約数の個数: 48

約数和(自身を含む): 37964160

約数和(自身を除く): 17605899

約数列:

[1, 3, 7, 9, 11, 21, 29, 33, 63, 77, 87, 99, 203, 231, 261, 319, 609, 693, 957, 1013, 1827, 2233, 2871, 3039, 6699, 7091, 9117, 11143, 20097, 21273, 29377, 33429, 63819, 78001, 88131, 100287, 205639, 234003, 264393, 323147, 616917, 702009, 969441, 1850751, 2262029, 2908323, 6786087, 20358261]

約数ペア:

[(1, 20358261), (3, 6786087), (7, 2908323), (9, 2262029), (11, 1850751), (21, 969441), (29, 702009), (33, 616917), (63, 323147), (77, 264393), (87, 234003), (99, 205639), (203, 100287), (231, 88131), (261, 78001), (319, 63819), (609, 33429), (693, 29377), (957, 21273), (1013, 20097), (1827, 11143), (2233, 9117), (2871, 7091), (3039, 6699)]