20111780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{751}}^1$

素因数の和:876

約数の個数: 48

約数和(自身を含む): 45986304

約数和(自身を除く): 25874524

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 103, 130, 206, 260, 412, 515, 751, 1030, 1339, 1502, 2060, 2678, 3004, 3755, 5356, 6695, 7510, 9763, 13390, 15020, 19526, 26780, 39052, 48815, 77353, 97630, 154706, 195260, 309412, 386765, 773530, 1005589, 1547060, 2011178, 4022356, 5027945, 10055890, 20111780]

約数ペア:

[(1, 20111780), (2, 10055890), (4, 5027945), (5, 4022356), (10, 2011178), (13, 1547060), (20, 1005589), (26, 773530), (52, 386765), (65, 309412), (103, 195260), (130, 154706), (206, 97630), (260, 77353), (412, 48815), (515, 39052), (751, 26780), (1030, 19526), (1339, 15020), (1502, 13390), (2060, 9763), (2678, 7510), (3004, 6695), (3755, 5356)]