809120

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1$

素因数の和:417

約数の個数: 48

約数和(自身を含む): 2063880

約数和(自身を除く): 1254760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 389, 416, 520, 778, 1040, 1556, 1945, 2080, 3112, 3890, 5057, 6224, 7780, 10114, 12448, 15560, 20228, 25285, 31120, 40456, 50570, 62240, 80912, 101140, 161824, 202280, 404560, 809120]

約数ペア:

[(1, 809120), (2, 404560), (4, 202280), (5, 161824), (8, 101140), (10, 80912), (13, 62240), (16, 50570), (20, 40456), (26, 31120), (32, 25285), (40, 20228), (52, 15560), (65, 12448), (80, 10114), (104, 7780), (130, 6224), (160, 5057), (208, 3890), (260, 3112), (389, 2080), (416, 1945), (520, 1556), (778, 1040)]