128124880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{353}}^1$

素因数の和:728

約数の個数: 80

約数和(自身を含む): 322635600

約数和(自身を除く): 194510720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 349, 353, 520, 698, 706, 1040, 1396, 1412, 1745, 1765, 2792, 2824, 3490, 3530, 4537, 4589, 5584, 5648, 6980, 7060, 9074, 9178, 13960, 14120, 18148, 18356, 22685, 22945, 27920, 28240, 36296, 36712, 45370, 45890, 72592, 73424, 90740, 91780, 123197, 181480, 183560, 246394, 362960, 367120, 492788, 615985, 985576, 1231970, 1601561, 1971152, 2463940, 3203122, 4927880, 6406244, 8007805, 9855760, 12812488, 16015610, 25624976, 32031220, 64062440, 128124880]

約数ペア:

[(1, 128124880), (2, 64062440), (4, 32031220), (5, 25624976), (8, 16015610), (10, 12812488), (13, 9855760), (16, 8007805), (20, 6406244), (26, 4927880), (40, 3203122), (52, 2463940), (65, 1971152), (80, 1601561), (104, 1231970), (130, 985576), (208, 615985), (260, 492788), (349, 367120), (353, 362960), (520, 246394), (698, 183560), (706, 181480), (1040, 123197), (1396, 91780), (1412, 90740), (1745, 73424), (1765, 72592), (2792, 45890), (2824, 45370), (3490, 36712), (3530, 36296), (4537, 28240), (4589, 27920), (5584, 22945), (5648, 22685), (6980, 18356), (7060, 18148), (9074, 14120), (9178, 13960)]