13156977792973

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{313}}^1\times {\mathrm{310931}}^1$

素因数の和:311378

約数の個数: 48

約数和(自身を含む): 16027375495680

約数和(自身を除く): 2870397702707

約数列:

[1, 7, 31, 49, 89, 217, 313, 623, 1519, 2191, 2759, 4361, 9703, 15337, 19313, 27857, 67921, 135191, 194999, 310931, 475447, 863567, 1364993, 2176517, 6044969, 9638861, 15235619, 27672859, 42314783, 67472027, 97321403, 193710013, 472304189, 681249821, 857858629, 1355970091, 3016963493, 4768748747, 6005010403, 8661604867, 21118744451, 42035072821, 60631234069, 147831211157, 268509750877, 424418638483, 1879568256139, 13156977792973]

約数ペア:

[(1, 13156977792973), (7, 1879568256139), (31, 424418638483), (49, 268509750877), (89, 147831211157), (217, 60631234069), (313, 42035072821), (623, 21118744451), (1519, 8661604867), (2191, 6005010403), (2759, 4768748747), (4361, 3016963493), (9703, 1355970091), (15337, 857858629), (19313, 681249821), (27857, 472304189), (67921, 193710013), (135191, 97321403), (194999, 67472027), (310931, 42314783), (475447, 27672859), (863567, 15235619), (1364993, 9638861), (2176517, 6044969)]