19691340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1277}}^1$

素因数の和:1546

約数の個数: 48

約数和(自身を含む): 55393632

約数和(自身を除く): 35702292

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 257, 514, 771, 1028, 1277, 1285, 1542, 2554, 2570, 3084, 3831, 3855, 5108, 5140, 6385, 7662, 7710, 12770, 15324, 15420, 19155, 25540, 38310, 76620, 328189, 656378, 984567, 1312756, 1640945, 1969134, 3281890, 3938268, 4922835, 6563780, 9845670, 19691340]

約数ペア:

[(1, 19691340), (2, 9845670), (3, 6563780), (4, 4922835), (5, 3938268), (6, 3281890), (10, 1969134), (12, 1640945), (15, 1312756), (20, 984567), (30, 656378), (60, 328189), (257, 76620), (514, 38310), (771, 25540), (1028, 19155), (1277, 15420), (1285, 15324), (1542, 12770), (2554, 7710), (2570, 7662), (3084, 6385), (3831, 5140), (3855, 5108)]