20921654768

素因数分解:

$2^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1033}}^1\times {\mathrm{2699}}^1$

素因数の和:3814

約数の個数: 80

約数和(自身を含む): 47080915200

約数和(自身を除く): 26159260432

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 67, 112, 134, 268, 469, 536, 938, 1033, 1072, 1876, 2066, 2699, 3752, 4132, 5398, 7231, 7504, 8264, 10796, 14462, 16528, 18893, 21592, 28924, 37786, 43184, 57848, 69211, 75572, 115696, 138422, 151144, 180833, 276844, 302288, 361666, 484477, 553688, 723332, 968954, 1107376, 1265831, 1446664, 1937908, 2531662, 2788067, 2893328, 3875816, 5063324, 5576134, 7751632, 10126648, 11152268, 19516469, 20253296, 22304536, 39032938, 44609072, 78065876, 156131752, 186800489, 312263504, 373600978, 747201956, 1307603423, 1494403912, 2615206846, 2988807824, 5230413692, 10460827384, 20921654768]

約数ペア:

[(1, 20921654768), (2, 10460827384), (4, 5230413692), (7, 2988807824), (8, 2615206846), (14, 1494403912), (16, 1307603423), (28, 747201956), (56, 373600978), (67, 312263504), (112, 186800489), (134, 156131752), (268, 78065876), (469, 44609072), (536, 39032938), (938, 22304536), (1033, 20253296), (1072, 19516469), (1876, 11152268), (2066, 10126648), (2699, 7751632), (3752, 5576134), (4132, 5063324), (5398, 3875816), (7231, 2893328), (7504, 2788067), (8264, 2531662), (10796, 1937908), (14462, 1446664), (16528, 1265831), (18893, 1107376), (21592, 968954), (28924, 723332), (37786, 553688), (43184, 484477), (57848, 361666), (69211, 302288), (75572, 276844), (115696, 180833), (138422, 151144)]