215501979

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{54877}}^1$

素因数の和:54915

約数の個数: 32

約数和(自身を含む): 379316736

約数和(自身を除く): 163814757

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 187, 231, 357, 561, 1309, 3927, 54877, 164631, 384139, 603647, 932909, 1152417, 1810941, 2798727, 4225529, 6530363, 10261999, 12676587, 19591089, 30785997, 71833993, 215501979]

約数ペア:

[(1, 215501979), (3, 71833993), (7, 30785997), (11, 19591089), (17, 12676587), (21, 10261999), (33, 6530363), (51, 4225529), (77, 2798727), (119, 1810941), (187, 1152417), (231, 932909), (357, 603647), (561, 384139), (1309, 164631), (3927, 54877)]