21336691820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{403951}}^1$

素因数の和:404118

約数の個数: 48

約数和(自身を含む): 47504755200

約数和(自身を除く): 26168063380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 139, 190, 278, 380, 556, 695, 1390, 2641, 2780, 5282, 10564, 13205, 26410, 52820, 403951, 807902, 1615804, 2019755, 4039510, 7675069, 8079020, 15350138, 30700276, 38375345, 56149189, 76750690, 112298378, 153501380, 224596756, 280745945, 561491890, 1066834591, 1122983780, 2133669182, 4267338364, 5334172955, 10668345910, 21336691820]

約数ペア:

[(1, 21336691820), (2, 10668345910), (4, 5334172955), (5, 4267338364), (10, 2133669182), (19, 1122983780), (20, 1066834591), (38, 561491890), (76, 280745945), (95, 224596756), (139, 153501380), (190, 112298378), (278, 76750690), (380, 56149189), (556, 38375345), (695, 30700276), (1390, 15350138), (2641, 8079020), (2780, 7675069), (5282, 4039510), (10564, 2019755), (13205, 1615804), (26410, 807902), (52820, 403951)]