20176679975

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{21661}}^1$

素因数の和:21780

約数の個数: 48

約数和(自身を含む): 27559262880

約数和(自身を除く): 7382582905

約数列:

[1, 5, 19, 25, 37, 53, 95, 185, 265, 475, 703, 925, 1007, 1325, 1961, 3515, 5035, 9805, 17575, 21661, 25175, 37259, 49025, 108305, 186295, 411559, 541525, 801457, 931475, 1148033, 2057795, 4007285, 5740165, 10288975, 15227683, 20036425, 21812627, 28700825, 42477221, 76138415, 109063135, 212386105, 380692075, 545315675, 807067199, 1061930525, 4035335995, 20176679975]

約数ペア:

[(1, 20176679975), (5, 4035335995), (19, 1061930525), (25, 807067199), (37, 545315675), (53, 380692075), (95, 212386105), (185, 109063135), (265, 76138415), (475, 42477221), (703, 28700825), (925, 21812627), (1007, 20036425), (1325, 15227683), (1961, 10288975), (3515, 5740165), (5035, 4007285), (9805, 2057795), (17575, 1148033), (21661, 931475), (25175, 801457), (37259, 541525), (49025, 411559), (108305, 186295)]