17980360

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7369}}^1$

素因数の和:7441

約数の個数: 32

約数和(自身を含む): 41124600

約数和(自身を除く): 23144240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 7369, 14738, 29476, 36845, 58952, 73690, 147380, 294760, 449509, 899018, 1798036, 2247545, 3596072, 4495090, 8990180, 17980360]

約数ペア:

[(1, 17980360), (2, 8990180), (4, 4495090), (5, 3596072), (8, 2247545), (10, 1798036), (20, 899018), (40, 449509), (61, 294760), (122, 147380), (244, 73690), (305, 58952), (488, 36845), (610, 29476), (1220, 14738), (2440, 7369)]