215878461

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{233}}^1\times {\mathrm{491}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 314990208

約数和(自身を除く): 99111747

約数列:

[1, 3, 17, 37, 51, 111, 233, 491, 629, 699, 1473, 1887, 3961, 8347, 8621, 11883, 18167, 25041, 25863, 54501, 114403, 146557, 308839, 343209, 439671, 926517, 1944851, 4232911, 5834553, 12698733, 71959487, 215878461]

約数ペア:

[(1, 215878461), (3, 71959487), (17, 12698733), (37, 5834553), (51, 4232911), (111, 1944851), (233, 926517), (491, 439671), (629, 343209), (699, 308839), (1473, 146557), (1887, 114403), (3961, 54501), (8347, 25863), (8621, 25041), (11883, 18167)]