16928821

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 22837248

約数和(自身を除く): 5908427

約数列:

[1, 7, 13, 17, 31, 91, 119, 217, 221, 353, 403, 527, 1547, 2471, 2821, 3689, 4589, 6001, 6851, 10943, 32123, 42007, 47957, 76601, 78013, 142259, 186031, 546091, 995813, 1302217, 2418403, 16928821]

約数ペア:

[(1, 16928821), (7, 2418403), (13, 1302217), (17, 995813), (31, 546091), (91, 186031), (119, 142259), (217, 78013), (221, 76601), (353, 47957), (403, 42007), (527, 32123), (1547, 10943), (2471, 6851), (2821, 6001), (3689, 4589)]