25992980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{389}}^1$

素因数の和:668

約数の個数: 48

約数和(自身を含む): 59164560

約数和(自身を除く): 33171580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 257, 260, 389, 514, 778, 1028, 1285, 1556, 1945, 2570, 3341, 3890, 5057, 5140, 6682, 7780, 10114, 13364, 16705, 20228, 25285, 33410, 50570, 66820, 99973, 101140, 199946, 399892, 499865, 999730, 1299649, 1999460, 2599298, 5198596, 6498245, 12996490, 25992980]

約数ペア:

[(1, 25992980), (2, 12996490), (4, 6498245), (5, 5198596), (10, 2599298), (13, 1999460), (20, 1299649), (26, 999730), (52, 499865), (65, 399892), (130, 199946), (257, 101140), (260, 99973), (389, 66820), (514, 50570), (778, 33410), (1028, 25285), (1285, 20228), (1556, 16705), (1945, 13364), (2570, 10114), (3341, 7780), (3890, 6682), (5057, 5140)]