123430280

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{4799}}^1$

素因数の和:5453

約数の個数: 32

約数和(自身を含む): 278208000

約数和(自身を除く): 154777720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 4799, 5144, 6430, 9598, 12860, 19196, 23995, 25720, 38392, 47990, 95980, 191960, 3085757, 6171514, 12343028, 15428785, 24686056, 30857570, 61715140, 123430280]

約数ペア:

[(1, 123430280), (2, 61715140), (4, 30857570), (5, 24686056), (8, 15428785), (10, 12343028), (20, 6171514), (40, 3085757), (643, 191960), (1286, 95980), (2572, 47990), (3215, 38392), (4799, 25720), (5144, 23995), (6430, 19196), (9598, 12860)]