19784580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1657}}^1$

素因数の和:1868

約数の個数: 48

約数和(自身を含む): 55708800

約数和(自身を除く): 35924220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 199, 398, 597, 796, 995, 1194, 1657, 1990, 2388, 2985, 3314, 3980, 4971, 5970, 6628, 8285, 9942, 11940, 16570, 19884, 24855, 33140, 49710, 99420, 329743, 659486, 989229, 1318972, 1648715, 1978458, 3297430, 3956916, 4946145, 6594860, 9892290, 19784580]

約数ペア:

[(1, 19784580), (2, 9892290), (3, 6594860), (4, 4946145), (5, 3956916), (6, 3297430), (10, 1978458), (12, 1648715), (15, 1318972), (20, 989229), (30, 659486), (60, 329743), (199, 99420), (398, 49710), (597, 33140), (796, 24855), (995, 19884), (1194, 16570), (1657, 11940), (1990, 9942), (2388, 8285), (2985, 6628), (3314, 5970), (3980, 4971)]