51381520

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{10529}}^1$

素因数の和:10603

約数の個数: 40

約数和(自身を含む): 121431960

約数和(自身を除く): 70050440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 10529, 21058, 42116, 52645, 84232, 105290, 168464, 210580, 421160, 642269, 842320, 1284538, 2569076, 3211345, 5138152, 6422690, 10276304, 12845380, 25690760, 51381520]

約数ペア:

[(1, 51381520), (2, 25690760), (4, 12845380), (5, 10276304), (8, 6422690), (10, 5138152), (16, 3211345), (20, 2569076), (40, 1284538), (61, 842320), (80, 642269), (122, 421160), (244, 210580), (305, 168464), (488, 105290), (610, 84232), (976, 52645), (1220, 42116), (2440, 21058), (4880, 10529)]