20121609805

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{2633}}^1$

素因数の和:2842

約数の個数: 64

約数和(自身を含む): 28401684480

約数和(自身を除く): 8280074675

約数列:

[1, 5, 11, 19, 55, 71, 95, 103, 209, 355, 515, 781, 1045, 1133, 1349, 1957, 2633, 3905, 5665, 6745, 7313, 9785, 13165, 14839, 21527, 28963, 36565, 50027, 74195, 80443, 107635, 138947, 144815, 186943, 250135, 271199, 402215, 550297, 694735, 934715, 1355995, 1528417, 2056373, 2751485, 2983189, 3551917, 5152781, 7642085, 10281865, 14915945, 17759585, 19255129, 25763905, 39071087, 56680591, 96275645, 195355435, 211806419, 283402955, 365847451, 1059032095, 1829237255, 4024321961, 20121609805]

約数ペア:

[(1, 20121609805), (5, 4024321961), (11, 1829237255), (19, 1059032095), (55, 365847451), (71, 283402955), (95, 211806419), (103, 195355435), (209, 96275645), (355, 56680591), (515, 39071087), (781, 25763905), (1045, 19255129), (1133, 17759585), (1349, 14915945), (1957, 10281865), (2633, 7642085), (3905, 5152781), (5665, 3551917), (6745, 2983189), (7313, 2751485), (9785, 2056373), (13165, 1528417), (14839, 1355995), (21527, 934715), (28963, 694735), (36565, 550297), (50027, 402215), (74195, 271199), (80443, 250135), (107635, 186943), (138947, 144815)]