78851920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1013}}^1$

素因数の和:1172

約数の個数: 80

約数和(自身を含む): 211236480

約数和(自身を除く): 132384560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 139, 140, 278, 280, 556, 560, 695, 973, 1013, 1112, 1390, 1946, 2026, 2224, 2780, 3892, 4052, 4865, 5065, 5560, 7091, 7784, 8104, 9730, 10130, 11120, 14182, 15568, 16208, 19460, 20260, 28364, 35455, 38920, 40520, 56728, 70910, 77840, 81040, 113456, 140807, 141820, 281614, 283640, 563228, 567280, 704035, 985649, 1126456, 1408070, 1971298, 2252912, 2816140, 3942596, 4928245, 5632280, 7885192, 9856490, 11264560, 15770384, 19712980, 39425960, 78851920]

約数ペア:

[(1, 78851920), (2, 39425960), (4, 19712980), (5, 15770384), (7, 11264560), (8, 9856490), (10, 7885192), (14, 5632280), (16, 4928245), (20, 3942596), (28, 2816140), (35, 2252912), (40, 1971298), (56, 1408070), (70, 1126456), (80, 985649), (112, 704035), (139, 567280), (140, 563228), (278, 283640), (280, 281614), (556, 141820), (560, 140807), (695, 113456), (973, 81040), (1013, 77840), (1112, 70910), (1390, 56728), (1946, 40520), (2026, 38920), (2224, 35455), (2780, 28364), (3892, 20260), (4052, 19460), (4865, 16208), (5065, 15568), (5560, 14182), (7091, 11120), (7784, 10130), (8104, 9730)]