208987775

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1$

素因数の和:296

約数の個数: 48

約数和(自身を含む): 284981760

約数和(自身を除く): 75993985

約数列:

[1, 5, 23, 25, 29, 83, 115, 145, 151, 415, 575, 667, 725, 755, 1909, 2075, 2407, 3335, 3473, 3775, 4379, 9545, 12035, 12533, 16675, 17365, 21895, 47725, 55361, 60175, 62665, 86825, 100717, 109475, 276805, 288259, 313325, 363457, 503585, 1384025, 1441295, 1817285, 2517925, 7206475, 8359511, 9086425, 41797555, 208987775]

約数ペア:

[(1, 208987775), (5, 41797555), (23, 9086425), (25, 8359511), (29, 7206475), (83, 2517925), (115, 1817285), (145, 1441295), (151, 1384025), (415, 503585), (575, 363457), (667, 313325), (725, 288259), (755, 276805), (1909, 109475), (2075, 100717), (2407, 86825), (3335, 62665), (3473, 60175), (3775, 55361), (4379, 47725), (9545, 21895), (12035, 17365), (12533, 16675)]