20807202845

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{6947}}^1$

素因数の和:7106

約数の個数: 64

約数和(自身を含む): 30255482880

約数和(自身を除く): 9448280035

約数列:

[1, 5, 11, 13, 55, 59, 65, 71, 143, 295, 355, 649, 715, 767, 781, 923, 3245, 3835, 3905, 4189, 4615, 6947, 8437, 10153, 20945, 34735, 42185, 46079, 50765, 54457, 76417, 90311, 230395, 272285, 382085, 409873, 451555, 493237, 599027, 993421, 2049365, 2466185, 2995135, 4508603, 4967105, 5328349, 5425607, 6412081, 22543015, 26641745, 27128035, 29100983, 32060405, 58611839, 70532891, 145504915, 293059195, 320110813, 352664455, 378312779, 1600554065, 1891563895, 4161440569, 20807202845]

約数ペア:

[(1, 20807202845), (5, 4161440569), (11, 1891563895), (13, 1600554065), (55, 378312779), (59, 352664455), (65, 320110813), (71, 293059195), (143, 145504915), (295, 70532891), (355, 58611839), (649, 32060405), (715, 29100983), (767, 27128035), (781, 26641745), (923, 22543015), (3245, 6412081), (3835, 5425607), (3905, 5328349), (4189, 4967105), (4615, 4508603), (6947, 2995135), (8437, 2466185), (10153, 2049365), (20945, 993421), (34735, 599027), (42185, 493237), (46079, 451555), (50765, 409873), (54457, 382085), (76417, 272285), (90311, 230395)]