19180365

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{227}}^1$

素因数の和:409

約数の個数: 32

約数和(自身を含む): 31781376

約数和(自身を除く): 12601011

約数列:

[1, 3, 5, 15, 43, 129, 131, 215, 227, 393, 645, 655, 681, 1135, 1965, 3405, 5633, 9761, 16899, 28165, 29283, 29737, 48805, 84495, 89211, 146415, 148685, 446055, 1278691, 3836073, 6393455, 19180365]

約数ペア:

[(1, 19180365), (3, 6393455), (5, 3836073), (15, 1278691), (43, 446055), (129, 148685), (131, 146415), (215, 89211), (227, 84495), (393, 48805), (645, 29737), (655, 29283), (681, 28165), (1135, 16899), (1965, 9761), (3405, 5633)]