209212240

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{19963}}^1$

素因数の和:20107

約数の個数: 40

約数和(自身を含む): 490156128

約数和(自身を除く): 280943888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 2096, 2620, 5240, 10480, 19963, 39926, 79852, 99815, 159704, 199630, 319408, 399260, 798520, 1597040, 2615153, 5230306, 10460612, 13075765, 20921224, 26151530, 41842448, 52303060, 104606120, 209212240]

約数ペア:

[(1, 209212240), (2, 104606120), (4, 52303060), (5, 41842448), (8, 26151530), (10, 20921224), (16, 13075765), (20, 10460612), (40, 5230306), (80, 2615153), (131, 1597040), (262, 798520), (524, 399260), (655, 319408), (1048, 199630), (1310, 159704), (2096, 99815), (2620, 79852), (5240, 39926), (10480, 19963)]