81666780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{104701}}^1$

素因数の和:104726

約数の個数: 48

約数和(自身を含む): 246259104

約数和(自身を除く): 164592324

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 104701, 209402, 314103, 418804, 523505, 628206, 1047010, 1256412, 1361113, 1570515, 2094020, 2722226, 3141030, 4083339, 5444452, 6282060, 6805565, 8166678, 13611130, 16333356, 20416695, 27222260, 40833390, 81666780]

約数ペア:

[(1, 81666780), (2, 40833390), (3, 27222260), (4, 20416695), (5, 16333356), (6, 13611130), (10, 8166678), (12, 6805565), (13, 6282060), (15, 5444452), (20, 4083339), (26, 3141030), (30, 2722226), (39, 2094020), (52, 1570515), (60, 1361113), (65, 1256412), (78, 1047010), (130, 628206), (156, 523505), (195, 418804), (260, 314103), (390, 209402), (780, 104701)]