20005993072

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{309269}}^1$

素因数の和:309601

約数の個数: 40

約数和(自身を含む): 41877632160

約数和(自身を除く): 21871639088

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 311, 622, 1244, 2488, 4043, 4976, 8086, 16172, 32344, 64688, 309269, 618538, 1237076, 2474152, 4020497, 4948304, 8040994, 16081988, 32163976, 64327952, 96182659, 192365318, 384730636, 769461272, 1250374567, 1538922544, 2500749134, 5001498268, 10002996536, 20005993072]

約数ペア:

[(1, 20005993072), (2, 10002996536), (4, 5001498268), (8, 2500749134), (13, 1538922544), (16, 1250374567), (26, 769461272), (52, 384730636), (104, 192365318), (208, 96182659), (311, 64327952), (622, 32163976), (1244, 16081988), (2488, 8040994), (4043, 4948304), (4976, 4020497), (8086, 2474152), (16172, 1237076), (32344, 618538), (64688, 309269)]