12815120

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8431}}^1$

素因数の和:8463

約数の個数: 40

約数和(自身を含む): 31367040

約数和(自身を除く): 18551920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 8431, 16862, 33724, 42155, 67448, 84310, 134896, 160189, 168620, 320378, 337240, 640756, 674480, 800945, 1281512, 1601890, 2563024, 3203780, 6407560, 12815120]

約数ペア:

[(1, 12815120), (2, 6407560), (4, 3203780), (5, 2563024), (8, 1601890), (10, 1281512), (16, 800945), (19, 674480), (20, 640756), (38, 337240), (40, 320378), (76, 168620), (80, 160189), (95, 134896), (152, 84310), (190, 67448), (304, 42155), (380, 33724), (760, 16862), (1520, 8431)]